{"id":17115,"date":"2026-04-29T20:37:55","date_gmt":"2026-04-29T18:37:55","guid":{"rendered":"https:\/\/revija-ventil.si\/monitoring-and-prevention-of-the-risk-of-deposit-and-varnish-formation\/"},"modified":"2026-04-29T20:40:58","modified_gmt":"2026-04-29T18:40:58","slug":"monitoring-and-prevention-of-the-risk-of-deposit-and-varnish-formation","status":"publish","type":"post","link":"https:\/\/revija-ventil.si\/en\/monitoring-and-prevention-of-the-risk-of-deposit-and-varnish-formation\/","title":{"rendered":"Monitoring and prevention of the risk of deposit and varnish formation"},"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;4.27.6&#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>Dr. Milan Kambi\u010d, univ. dipl. in\u017e., Olma d. o. o., Ljubljana<\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Tip \u010dlanka&#8221; _builder_version=&#8221;4.27.6&#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) 2 \/ 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\/kambic-04-2026.jpg&#8221; title_text=&#8221;Monitoring and prevention of the risk of deposit and varnish formation &#8211; Milan Kambi\u010d&#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;4.27.6&#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; alt=&#8221;Monitoring and prevention of the risk of deposit and varnish formation &#8211; Milan Kambi\u010d&#8221; sticky_enabled=&#8221;0&#8243;]&nbsp;<br \/>\n[\/et_pb_image][et_pb_text admin_label=&#8221;DOI&#8221; _builder_version=&#8221;4.27.6&#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-32-2026-2.23\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.5545\/Ventil-32-2026-2.23<\/a><\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Besedilo&#8221; _builder_version=&#8221;4.27.6&#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>Varnish deposits represent one of the key, yet often overlooked, causes of reduced reliability in modern hydraulic and lubrication systems. Their impact does not manifest as sudden failures, but rather as a gradual degradation of performance, which can lead to valve sticking, reduced efficiency of control components, and unplanned equipment downtime. The formation of varnish is associated with complex mechanisms of chemical and physical lubricant degradation, while conventional oil analysis parameters often fail to detect the early stages of this phenomenon.<\/p>\n<p><\/p>\n<p>This paper discusses the mechanisms of varnish formation, the limitations of routine oil analysis, and modern diagnostic approaches for monitoring varnish potential, with an emphasis on preventive management of lubrication systems.<\/p>\n<p><\/p>\n<p style=\"text-align: justify;\"><strong>Keywords:<br \/><\/strong>varnish deposits, oxidation, MPC, hydraulic system, lubricants<\/p>\n<p><\/p>\n<p><strong>Copyright (c) 2026 Milan Kambi\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\/kambic-04-2026.pdf&#8221; url_new_window=&#8221;on&#8221; button_text=&#8221;Download PDF&#8221; admin_label=&#8221;Gumb Prenesi PDF&#8221; _builder_version=&#8221;4.27.6&#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>Varnish deposits represent one of the key, yet often overlooked, causes of reduced reliability in modern hydraulic and lubrication systems. Their impact does not manifest as sudden failures, but rather as a gradual degradation of performance, which can lead to valve sticking, reduced efficiency of control components, and unplanned equipment downtime.<\/p>\n","protected":false},"author":5,"featured_media":17076,"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-17115","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 v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Monitoring and prevention of the risk of deposit and varnish formation - Ventil<\/title>\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\/monitoring-and-prevention-of-the-risk-of-deposit-and-varnish-formation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Monitoring and prevention of the risk of deposit and varnish formation - Ventil\" \/>\n<meta property=\"og:description\" content=\"Varnish deposits represent one of the key, yet often overlooked, causes of reduced reliability in modern hydraulic and lubrication systems. 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