front_aerial_view_container_ship_in_water_fs_md_1300x400

Mobilgard™ 300 C system oil

MobilgardY_300_C-01
Related Product
Mobilgard™ 570 cylinder oil is designed to optimise the performance of two-stroke marine diesel engines operating on heavy fuel oil with a sulphur content of up to 3.5 per cent. It can help improve ...
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 ...
Mobilgard™ 5100 advanced cylinder oil is designed for two-stroke marine diesel engines operating on heavy fuel oil. It is engineered to help prevent cold corrosion – and reduce maintenance and ...
Product Information
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

The high quality paraffinic base oils used in Mobilgard 300 C have excellent thermal stability and oxidation resistance. The formulation includes proprietary detergent and anti-wear additive systems to deliver enhanced crankcase cleanliness, along with excellent protection for highly-loaded engine parts. Mobilgard 300 C also provides good rust protection in case of water contamination, and excellent water separation characteristics.
When used as recommended in crosshead type diesel engines, Mobilgard 300 C system oil offers the following features and potential benefits:

 

Features Advantages and Potential Benefits
Enhanced detergency and improved thermal and oxidation stability Reduced deposits in piston cooling spaces
Better piston cooling efficiency
Cleaner crankcases and circulation tanks
Enhanced load-carrying and anti-wear performance Excellent protection for highly loaded engine components such as bearings and gears
Excellent rust and corrosion properties Longer bearing life
Protects critical bearing surfaces
Good water tolerance and separation capability Effective lubrication in the presence of water
Longer oil life due to efficient water separation

 

Applications
Mobilgard 300 C is recommended primarily for use as system oil in late model, high-output, crosshead diesel engines, especially those engines employing the system oil for piston cooling. It will prevent or reduce deposit formation in the piston cooling spaces, thus maintaining piston cooling efficiency and reducing the incidence of piston top burning and piston crown cracking. It will also prevent or reduce crankcase deposits and will provide outstanding protection for heavily loaded bearings and gears. Good rust prevention and water separation characteristics make Mobilgard 300 C an excellent system oil in older design crosshead diesel engines which have water-cooled pistons and where crankcase deposits can be a problem with lower-quality system oils.
Typical Properties
SAE Grade 30
Specific Gravity at 15ºC 0.8665
Flash Point, ºC, ASTM D 92 245
Pour Point, ºC, ASTM D 97 24
Viscosity, ASTM D 445  
cSt, at 40ºC 109
cSt, at 100ºC 11.9
Viscosity Index, ASTM D 2270 98
TBN, mg KOH/g, ASTM D 2896 9
Sulphated Ash, wt%, ASTM D 874 1.06
FZG Scuffing, Fail Load Stage, A/8.3/90, ISO 14635-1 12
comment
Equipment builders
  • MAN
  • Wartsila
Industry Sectors
  • deep sea shipping industry
Mobilgard™ 570 cylinder oil
Mobilgard™ 570 cylinder oil is designed to optimise the performance of two-stroke marine diesel engines operating on heavy fuel oil with a sulphur content of up to 3.5 per cent. It can help improve ...
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 ...
Mobilgard™ 5100 cylinder oil
Mobilgard™ 5100 advanced cylinder oil is designed for two-stroke marine diesel engines operating on heavy fuel oil. It is engineered to help prevent cold corrosion – and reduce maintenance and ...
Mobilgard™ 540 cylinder oil
Mobilgard™ 540 cylinder oil provides optimal protection for two-stroke marine diesel engines operating on 0.50% sulphur fuels that comply with the International Maritime Organization’s (IMO) 2020 ...