Press Release, October 2025

Shipowners seeking to reduce lube-oil consumption and minimise retrofit downtime have a new solution in SIP+, the latest evolution of HJ Lubricators’ patented Swirl Injection Principle (SIP) valve for two-stroke marine engines.

FASTER, SIMPLER RETROFITS
The redesigned, dual-fuel-ready SIP+ valve eliminates the need for internal liner machining and top-cover removal – a breakthrough that reduces installation time by more than one-third. This enables retrofits to be completed during normal port stays, cutting downtime and associated costs.
“SIP+ takes a proven technology and makes it easier and faster to install, while achieving the same optimal lubrication at low feed rates,” said the company's Head of Sales, Mark Kristensen. “Downtime is one of the biggest hidden costs in fleet operations, and SIP+ makes upgrades both more practical and cost-effective.”

CLEANER, MORE EFFICIENT OPERATION
SIP+ retains all the advantages of the original SIP design: uniform oil-film distribution, reduced liner wear and lower lube-oil consumption. It is fully compatible with existing lubrication systems and optimised for modern operating conditions, including thin-oil and dual-fuel engines.
Lower lube-oil consumption translates directly into reduced OPEX, while less oil burned means lower CO₂ and particle emissions – helping owners meet increasingly strict emission standards. HJ Lubricators estimates a typical payback period of around three years and offers an online calculator for precise savings estimates.

PROVEN TECHNOLOGY, FUTURE-READY PERFORMANCE
“With more than 3,500 HJ Lubricators systems already in service, SIP+ is a small design change with a big impact,” Kristensen added. “It gives shipowners a flexible, innovative way to future-proof their engines at a time when energy efficiency is paramount."