Mobilgard™ 540 AC cylinder oil

Mobilgard™ 540 AC is a premium 40BN cylinder oil that has been granted Category II status by MAN ES for use in its Mark 9 and higher two-stroke marine diesel engine designs.

The premium 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 the engine builder following extensive field demonstrations.

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. It can help:

• Combats deposits and scuffing-related engine wear associated with low-sulphur fuels
• Delivers exceptional cleanliness due to high level of detergency
• Ensures performance even in severe operating conditions due to its excellent thermal and oxidative stability 

Mobilgard™ 540 AC has demonstrated the ability to deliver advanced cleanliness and wear protection while optimising cylinder oil feed-rates and effectively managing acid neutralisation in a range of engines and fuel applications.

The Category II cylinder oil, which is applicable for use in all MAN two-stroke engines across LNG, distillate and very low sulphur fuel oil (VLSFOs) operation, is recommended for its Mark 9 engines and higher.