{"id":17270,"date":"2026-06-29T22:30:04","date_gmt":"2026-06-29T20:30:04","guid":{"rendered":"https:\/\/revija-ventil.si\/monograde-or-multigrade-hydraulic-oils\/"},"modified":"2026-06-29T22:33:26","modified_gmt":"2026-06-29T20:33:26","slug":"monograde-or-multigrade-hydraulic-oils","status":"publish","type":"post","link":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/","title":{"rendered":"Monograde or Multigrade Hydraulic Oils?"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;section&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_row column_structure=&#8221;3_4,1_4&#8243; use_custom_gutter=&#8221;on&#8221; gutter_width=&#8221;2&#8243; admin_label=&#8221;row&#8221; _builder_version=&#8221;4.16&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;3_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_post_title author=&#8221;off&#8221; date_format=&#8221;j. F, Y&#8221; categories=&#8221;off&#8221; comments=&#8221;off&#8221; featured_image=&#8221;off&#8221; admin_label=&#8221;Post Title&#8221; _builder_version=&#8221;4.27.5&#8243; title_level=&#8221;h2&#8243; custom_margin=&#8221;||30px||false|false&#8221; custom_margin_tablet=&#8221;||20px||false|false&#8221; custom_margin_phone=&#8221;&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; custom_padding=&#8221;||||false|false&#8221; global_module=&#8221;11762&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_post_title][et_pb_text content_last_edited=&#8221;off|desktop&#8221; admin_label=&#8221;Avtor&#8221; _builder_version=&#8221;4.27.7&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; min_height=&#8221;21px&#8221; custom_margin=&#8221;||10px||false|false&#8221; custom_margin_tablet=&#8221;||||false|false&#8221; custom_margin_phone=&#8221;||10px||false|false&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; custom_padding_last_edited=&#8221;off|desktop&#8221; hover_enabled=&#8221;0&#8243; use_border_color=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p>Izr. prof. dr. Franc Majdi\u010d, univ. dipl. in\u017e., Univerza v Ljubljani, Fakulteta za strojni\u0161tvo<\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Tip \u010dlanka&#8221; _builder_version=&#8221;4.27.7&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; custom_margin=&#8221;||25px||false|false&#8221; custom_margin_tablet=&#8221;&#8221; custom_margin_phone=&#8221;&#8221; custom_margin_last_edited=&#8221;on|phone&#8221; custom_padding=&#8221;||0px||false|false&#8221; hover_enabled=&#8221;0&#8243; use_border_color=&#8221;off&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p>Ventil 32 (2026) 3 \/ Review articles \/ Technical article \u2013 1.04<\/p>\n<p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg&#8221; alt=&#8221;Monograde or Multigrade Hydraulic Oils?&#8221; title_text=&#8221;Monograde or Multigrade Hydraulic Oils?&#8221; show_in_lightbox=&#8221;on&#8221; force_fullwidth=&#8221;on&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;&#8221; align_last_edited=&#8221;on|desktop&#8221; admin_label=&#8221;Slika&#8221; _builder_version=&#8221;4.27.7&#8243; custom_margin=&#8221;||||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; animation_style=&#8221;fade&#8221; animation_direction=&#8221;left&#8221; animation_duration=&#8221;500ms&#8221; hover_enabled=&#8221;0&#8243; use_border_color=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text admin_label=&#8221;DOI&#8221; _builder_version=&#8221;4.27.7&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; custom_margin=&#8221;||25px||false|false&#8221; custom_margin_tablet=&#8221;&#8221; custom_margin_phone=&#8221;&#8221; custom_margin_last_edited=&#8221;on|phone&#8221; custom_padding=&#8221;||0px||false|false&#8221; hover_enabled=&#8221;0&#8243; use_border_color=&#8221;off&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p>DOI: <a href=\"https:\/\/doi.org\/10.5545\/Ventil-32-2026-3.26\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.5545\/Ventil-32-2026-3.27<\/a><\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Besedilo&#8221; _builder_version=&#8221;4.27.7&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; custom_margin=&#8221;||25px||false|false&#8221; custom_margin_tablet=&#8221;&#8221; custom_margin_phone=&#8221;&#8221; custom_margin_last_edited=&#8221;on|phone&#8221; custom_padding=&#8221;||0px||false|false&#8221; hover_enabled=&#8221;0&#8243; use_border_color=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p><strong>Abstract\u200b:<br \/><\/strong><\/p>\n<p><\/p>\n<p>In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils. Hydraulic oil differs from all other lubricants because it must primarily fulfil two main functions: energy transmission and lubrication. In addition, it must prevent foaming, release entrained air bubbles, be thermally, oxidatively, and hydrolytically stable, possess good anti-wear properties, provide good filterability and demulsibility, offer effective corrosion protection, maintain stable viscosity, and ensure an adequate thickness of the lubricating film. All of this is crucial for ensuring a long service life of hydraulic systems.<\/p>\n<p><\/p>\n<p style=\"text-align: justify;\"><strong>Key words:<br \/><\/strong>Mono and multigrade hydraulic oils, Energy transmission, Lubrication, Hydraulic system maintenance<\/p>\n<p><\/p>\n<p><strong>Copyright (c) 2026 Franc Majdi\u010d<br \/><\/strong><br \/><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-16131\" src=\"https:\/\/revija-ventil.si\/wp-content\/uploads\/cc-300x105.png\" alt=\"\" width=\"120\" height=\"42\" srcset=\"https:\/\/revija-ventil.si\/wp-content\/uploads\/cc-300x105.png 300w, https:\/\/revija-ventil.si\/wp-content\/uploads\/cc-400x141.png 400w, https:\/\/revija-ventil.si\/wp-content\/uploads\/cc.png 403w\" sizes=\"(max-width: 120px) 100vw, 120px\" \/><\/a><\/p>\n<p><\/p>\n<p>This work is licensed under a<br \/><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\">Creative Commons Attribution 4.0 International License<\/a>.<\/p>\n<p><\/p>\n<p>Except where otherwise noted, articles in<br \/>this journal are published under the<br \/><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\">Creative Commons Attribution 4.0 International License<\/a><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" target=\"_blank\" rel=\"noopener\">.<\/a><\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.pdf&#8221; url_new_window=&#8221;on&#8221; button_text=&#8221;Download PDF&#8221; admin_label=&#8221;Gumb Prenesi PDF&#8221; _builder_version=&#8221;4.27.7&#8243; custom_button=&#8221;on&#8221; button_text_size=&#8221;15px&#8221; button_text_color=&#8221;#00868a&#8221; button_bg_color=&#8221;rgba(0,0,0,0)&#8221; button_border_color=&#8221;#00868a&#8221; button_icon=&#8221;&#xe0e8;||divi||400&#8243; custom_margin=&#8221;||0px||false|false&#8221; custom_margin_tablet=&#8221;||20px||false|false&#8221; custom_margin_phone=&#8221;&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; custom_padding=&#8221;||||false|false&#8221; hover_enabled=&#8221;0&#8243; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; button_border_color__hover_enabled=&#8221;on|hover&#8221; button_border_color__hover=&#8221;#00868a&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;][\/et_pb_button][et_pb_post_nav in_same_term=&#8221;on&#8221; prev_text=&#8221;Older entries&#8221; next_text=&#8221;Newer entries&#8221; admin_label=&#8221;Navigacija po objavah&#8221; _builder_version=&#8221;4.3.3&#8243; custom_margin=&#8221;||||false|false&#8221; custom_margin_phone=&#8221;||||false|false&#8221; custom_margin_last_edited=&#8221;off|desktop&#8221; custom_padding=&#8221;20px||||false|false&#8221; custom_padding_tablet=&#8221;0px||0px||false|false&#8221; custom_padding_phone=&#8221;0px||0px||false|false&#8221; custom_padding_last_edited=&#8221;on|tablet&#8221; title_text_color_last_edited=&#8221;off|desktop&#8221; global_module=&#8221;11763&#8243; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; title_text_color__hover_enabled=&#8221;on|desktop&#8221; title_text_color__hover=&#8221;#212b31&#8243; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_post_nav][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_sidebar orientation=&#8221;right&#8221; area=&#8221;et_pb_widget_area_4&#8243; disabled_on=&#8221;on|on|off&#8221; _builder_version=&#8221;4.27.4&#8243; global_module=&#8221;11764&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_sidebar][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Izr. prof. dr. Franc Majdi\u010d, univ. dipl. in\u017e., Univerza v Ljubljani, Fakulteta za strojni\u0161tvoVentil 32 (2026) 3 \/ Review articles \/ Technical article \u2013 1.04DOI: https:\/\/doi.org\/10.5545\/Ventil-32-2026-3.27Abstract\u200b:In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils. Hydraulic oil differs from all other lubricants because it must [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":17223,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[153,154],"tags":[],"class_list":["post-17270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exposed-articles","category-science-and-expert-articles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Monograde or Multigrade Hydraulic Oils? - Ventil<\/title>\n<meta name=\"description\" content=\"In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Monograde or Multigrade Hydraulic Oils? - Ventil\" \/>\n<meta property=\"og:description\" content=\"In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/\" \/>\n<meta property=\"og:site_name\" content=\"Ventil\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-29T20:30:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-29T20:33:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"512\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Denis \u0160enkinc\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Denis \u0160enkinc\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/\"},\"author\":{\"name\":\"Denis \u0160enkinc\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#\\\/schema\\\/person\\\/440c2ee7bc0d8f5684aaefb25c60807e\"},\"headline\":\"Monograde or Multigrade Hydraulic Oils?\",\"datePublished\":\"2026-06-29T20:30:04+00:00\",\"dateModified\":\"2026-06-29T20:33:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/\"},\"wordCount\":918,\"publisher\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/revija-ventil.si\\\/wp-content\\\/uploads\\\/majdic-06-2026.jpg\",\"articleSection\":[\"Exposed articles\",\"Science and expert articles\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/\",\"url\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/\",\"name\":\"Monograde or Multigrade Hydraulic Oils? - Ventil\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/revija-ventil.si\\\/wp-content\\\/uploads\\\/majdic-06-2026.jpg\",\"datePublished\":\"2026-06-29T20:30:04+00:00\",\"dateModified\":\"2026-06-29T20:33:26+00:00\",\"description\":\"In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#primaryimage\",\"url\":\"https:\\\/\\\/revija-ventil.si\\\/wp-content\\\/uploads\\\/majdic-06-2026.jpg\",\"contentUrl\":\"https:\\\/\\\/revija-ventil.si\\\/wp-content\\\/uploads\\\/majdic-06-2026.jpg\",\"width\":1024,\"height\":512,\"caption\":\"Namenska ali univerzalna hidravli\u010dna olja?\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/monograde-or-multigrade-hydraulic-oils\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Monograde or Multigrade Hydraulic Oils?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/\",\"name\":\"Ventil\",\"description\":\"Revija za fluidno tehniko, napredno in\u017eenirstvo in tehnologije\",\"publisher\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#organization\"},\"alternateName\":\"Revija Ventil\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#organization\",\"name\":\"Ventil\",\"url\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/revija-ventil.si\\\/wp-content\\\/uploads\\\/logo-ventil-n.png\",\"contentUrl\":\"https:\\\/\\\/revija-ventil.si\\\/wp-content\\\/uploads\\\/logo-ventil-n.png\",\"width\":1024,\"height\":221,\"caption\":\"Ventil\"},\"image\":{\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/#\\\/schema\\\/person\\\/440c2ee7bc0d8f5684aaefb25c60807e\",\"name\":\"Denis \u0160enkinc\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/24ad312051082a79e24a9245304d960225cd733734eb1efd09e8c33c627f7b0e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/24ad312051082a79e24a9245304d960225cd733734eb1efd09e8c33c627f7b0e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/24ad312051082a79e24a9245304d960225cd733734eb1efd09e8c33c627f7b0e?s=96&d=mm&r=g\",\"caption\":\"Denis \u0160enkinc\"},\"url\":\"https:\\\/\\\/revija-ventil.si\\\/en\\\/author\\\/rv3nt1lsuperadmind-2\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Monograde or Multigrade Hydraulic Oils? - Ventil","description":"In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/","og_locale":"en_US","og_type":"article","og_title":"Monograde or Multigrade Hydraulic Oils? - Ventil","og_description":"In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils.","og_url":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/","og_site_name":"Ventil","article_published_time":"2026-06-29T20:30:04+00:00","article_modified_time":"2026-06-29T20:33:26+00:00","og_image":[{"width":1024,"height":512,"url":"https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg","type":"image\/jpeg"}],"author":"Denis \u0160enkinc","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Denis \u0160enkinc","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#article","isPartOf":{"@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/"},"author":{"name":"Denis \u0160enkinc","@id":"https:\/\/revija-ventil.si\/en\/#\/schema\/person\/440c2ee7bc0d8f5684aaefb25c60807e"},"headline":"Monograde or Multigrade Hydraulic Oils?","datePublished":"2026-06-29T20:30:04+00:00","dateModified":"2026-06-29T20:33:26+00:00","mainEntityOfPage":{"@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/"},"wordCount":918,"publisher":{"@id":"https:\/\/revija-ventil.si\/en\/#organization"},"image":{"@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#primaryimage"},"thumbnailUrl":"https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg","articleSection":["Exposed articles","Science and expert articles"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/","url":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/","name":"Monograde or Multigrade Hydraulic Oils? - Ventil","isPartOf":{"@id":"https:\/\/revija-ventil.si\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#primaryimage"},"image":{"@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#primaryimage"},"thumbnailUrl":"https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg","datePublished":"2026-06-29T20:30:04+00:00","dateModified":"2026-06-29T20:33:26+00:00","description":"In this article on the maintenance of hydraulic equipment, we will discuss the difference between monograde and multigrade hydraulic oils.","breadcrumb":{"@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#primaryimage","url":"https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg","contentUrl":"https:\/\/revija-ventil.si\/wp-content\/uploads\/majdic-06-2026.jpg","width":1024,"height":512,"caption":"Namenska ali univerzalna hidravli\u010dna olja?"},{"@type":"BreadcrumbList","@id":"https:\/\/revija-ventil.si\/en\/monograde-or-multigrade-hydraulic-oils\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/revija-ventil.si\/en\/"},{"@type":"ListItem","position":2,"name":"Monograde or Multigrade Hydraulic Oils?"}]},{"@type":"WebSite","@id":"https:\/\/revija-ventil.si\/en\/#website","url":"https:\/\/revija-ventil.si\/en\/","name":"Ventil","description":"Revija za fluidno tehniko, napredno in\u017eenirstvo in tehnologije","publisher":{"@id":"https:\/\/revija-ventil.si\/en\/#organization"},"alternateName":"Revija Ventil","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/revija-ventil.si\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/revija-ventil.si\/en\/#organization","name":"Ventil","url":"https:\/\/revija-ventil.si\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/revija-ventil.si\/en\/#\/schema\/logo\/image\/","url":"https:\/\/revija-ventil.si\/wp-content\/uploads\/logo-ventil-n.png","contentUrl":"https:\/\/revija-ventil.si\/wp-content\/uploads\/logo-ventil-n.png","width":1024,"height":221,"caption":"Ventil"},"image":{"@id":"https:\/\/revija-ventil.si\/en\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/revija-ventil.si\/en\/#\/schema\/person\/440c2ee7bc0d8f5684aaefb25c60807e","name":"Denis \u0160enkinc","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/24ad312051082a79e24a9245304d960225cd733734eb1efd09e8c33c627f7b0e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/24ad312051082a79e24a9245304d960225cd733734eb1efd09e8c33c627f7b0e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/24ad312051082a79e24a9245304d960225cd733734eb1efd09e8c33c627f7b0e?s=96&d=mm&r=g","caption":"Denis \u0160enkinc"},"url":"https:\/\/revija-ventil.si\/en\/author\/rv3nt1lsuperadmind-2\/"}]}},"_links":{"self":[{"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/posts\/17270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/comments?post=17270"}],"version-history":[{"count":2,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/posts\/17270\/revisions"}],"predecessor-version":[{"id":17272,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/posts\/17270\/revisions\/17272"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/media\/17223"}],"wp:attachment":[{"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/media?parent=17270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/categories?post=17270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revija-ventil.si\/en\/wp-json\/wp\/v2\/tags?post=17270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}