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Your knowledge hub on cylinder lubrication
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From graduate to PhD student: a journey of responsibility and innovation at HJ Lubricators
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Building strong customer relationships
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HJ Lubricators to showcase smarter marine lubrication solutions at Sea Asia 2025
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Optimising Lubrication and Scavenging Dynamics: Insights from Advanced CFD Modelling
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New Agency Agreement Signed at Expomaritt Exposhipping İstanbul
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Proactive support as a key differentiator
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A New strategy for HJ Lubricators: Customer-centric solutions
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Welcome to a New Era for HJ Lubricators
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Training and Knowledge-Sharing at Hans Jensen Lubricators
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Strengthening Customer Focus and Long-Term Value
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A partnership for efficient marine engine cylinder lubrication and operational stability
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Reducing CO2 emissions
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SERVICE LETTER: HJ Smartlube 4.0 – software update 24.05
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Cylinder wear in two-stroke marine engines
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SERVICE LETTER: HJ Smartlube 4.0 – software update
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BLOG-POST:5 facts about advanced cylinder lubrication technology
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BLOG-POST: Reduce the risk of scuffing in cylinder liners
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BLOG-POST: Keep your two-stroke marine engine running efficiently
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BLOG-POST: Improve cylinder condition through effective lubrication
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BLOG-POST: Reduce lube oil consumption and emissions
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SERVICE LETTER: Succeed with SIP
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SERVICE LETTER: HJ X-Tronic software
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SERVICE LETTER: Changing to HJ Non-return valves
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SERVICE INFORMATION: Lacquering
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BLOG-POST: Minimizing lubrication feed rate: 3 reasons why less is more
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EEXI challenges cylinder condition
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Case Costamare: Face-off between HJL and standard lubricators
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NEWS: HJL joins G&O Maritime Group
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Greater flexibility in cylinder lubrication
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LP Fleet owner
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Case aet: Reducing feed rate by 32%
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Case Hafnia: TRIPLING LINER LIFE TIME
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Case: K Line slices feed rate by 55%
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NEWS: Successful business 2020
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SERVICE LETTER: Recovery of marine pc showing a blue screen
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SERVICE LETTER: Feed rate adjustment after installing HJ SIP valves
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SERVICE LETTER: E-mailing files til HJL
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SERVICE LETTER: Feed rate adjustment after installing HJ Non-Return valves
Featured client case studies

CLIENT CASE STUDY: AET
Reducing feed rate by 32%
The marine vessel Eagle Varna was experiencing a high feed rate of the cylinder lube oil. HJ Lubricators installed HJ SIP valves on MAN Alpha, which resulted in a significant reduction in cylinder lube oil consumption.
Engine: 7S80MC-C

CLIENT CASE STUDY: HAFNIA
Tripling liner life time
Hafnia, a member of BW Group, upgraded the engine’s cylinder lubrication system onboard their Medium Range Product Tanker, BW Egret, in January 2020. Liners previously had a wear rate that exceeded the maximum allowable limit.
Engine: 6S50ME-B

CLIENT CASE STUDY: COSTAMARE INC.
Face-off between HJL and standard lubrication system
A joint test with MAN Diesel & Turbo (MDT) and HJ Lubricators determined the effectiveness of HJ Lubtronic SIP over standard lubrication on a new, super-long stroke, electronically controlled engine which was prone to high rates of cylinder wear, cold corrosion and high feed rate.
Engine: 9S90ME-C
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