Mobilgard™ 540 AC
Mobilgard™ 540 AC is a premium 40BN cylinder oil that has been developed for use in slow-speed, two-stroke marine engines operating on fuels with up to 1.50% sulphur content, LNG, ethane, methanol and LPG1.
It has been LNG validated2 by WinGD for use in its dual fuel engines with conventional fuels, including methanol, adding peace of mind for vessel operators when switching between fuels. Mobilgard 540 AC has also been granted Category II status by MAN ES for use in its two stroke engines, including dual-fuel variants.
The high-performance lubricant was developed using ExxonMobil’s proprietary balanced formulation approach to meet the advanced cleanliness needs of these newer engines. It received a No Objection Letter from both WinGD and MAN ES following extensive field trials.
Mobilgard 540 AC is also designed to deliver optimal lubrication at the elevated peak firing pressures and liner temperatures found in modern marine two-stroke engines, including dual fuel engines. It can help:
It has demonstrated the ability to deliver advanced cleanliness and wear protection while optimising cylinder oil feed-rates and effectively managing modern engine lubrication needs in a range of engine designs and fuel applications.
Product Information
Mobilgard 540 AC combines the use of high-quality, globally consistent base stocks with a superb additive formulation to provide superior detergency capability, which can lead to cleaner engine components.
It also offers outstanding resistance to oxidation and acid formation and delivers excellent deposit control even in increased combustion temperatures and pressures, which are particularly prevalent in LNG fuel operation.
Mobilgard 540 AC is formulated to provide outstanding performance in marine crosshead engines operating on a wide variety of fuel applications, including continuous LNG use.
The cylinder oil is suitable for use in all MAN ES and WinGD two-stroke engines across LNG, distillate, methanol and very low sulphur fuel oil (VLSFOs).
1 Please refer to OEM guidelines.
2 LNG validated has been introduced by WinGD as the renewed claim language for dual fuel validation (April 2024).
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