Mobilgard™ 525 cylinder oil

Mobilgard™ 525 cylinder oil provides optimal engine protection while meeting the 2015 Emission Control Area sulphur requirements. It helps prevent deposit formation and scuffing-related engine wear that can occur when using 0.10 per cent sulphur fuel.

Additional benefits of Mobilgard 525 cylinder oil may include:

Excellent thermal and oxidative stability to ensure performance in a variety of engine conditions
Longer piston overhaul intervals
Helping decrease maintenance costs

In conjunction with ExxonMobil’s Mobil Serv℠ Cylinder Condition Monitoring service, Mobilgard 525 oil can help operators protect engines and optimise feed rates while using low sulphur distillate fuels.

Mobilgard 525 cylinder oil has received No Objection Letters from MAN Diesel & Turbo and WinGD (formerly Wärtsilä).

*ExxonMobil recommends Mobilgard 525 oil for use in Tier I and Tier II engines operating on low-sulphur distillate.

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Data Sheet

Product data sheet (PDS)

Safety data sheet (SDS)

Product Information

Mobilgard™ 525 performance profile

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Technical resources

Guidelines for switchover to ExxonMobil marine lubricants

Learn about five different circumstances related to switching and mixing ExxonMobil marine lubricants.

Features and Benefits

Combats the deposits and scuffing related engine wear associated with low sulphur fuels
Excellent thermal and oxidative stability to ensure performance in a variety of engine conditions
Formulated with detergent technology required to deliver excellent performance with low-sulphur fuel
Detergency system provides strong control of piston groove deposits which is a critical area for distillate fuel operation

Specifications and Approvals

Mobilgard 525 has the following builder approvals
MAN Diesel	X
Wartsila	X

** Please refer to latest service bulletins from MAN Diesel & Turbo and Wartsila Switzerland for lubrication requirements.

To ensure achieving the maximum equipment life possible as well as appropriate feedrates, particular attention should be paid to the manufacturer's special recommendations as published in the references as above or any other future manufacturer’s instructions.

Applications

Marine crosshead engines designed for increased power and fuel efficiency
Earlier engine designs and engines in slow speed steaming operation

Typical Properties

SAE Grade	50
Specific Gravity at 15ºC	0.909
Flash Point, ºC, ASTM D 92	286
Pour Point, ºC, ASTM D 97	-9
cSt, at 40ºC	226
cSt, at 100ºC	20
Viscosity Index, ASTM D 2270	102
TBN, mg KOH/g, ASTM D 2896	25