Mobilgard™ 300 C — Next-Generation System Oil | Two-Stroke Crosshead Engines

9 BN

TBN mgKOH/g

SAE 30

Grade

System

Oil — Crankcase

2-Stroke

Crosshead Engine

Next

Generation Formula

Clean

Undercrown Focus

Improved Piston Undercrown Cleanliness

Specifically engineered to combat the piston undercrown deposits and sludge build-up that are a primary cause of heat transfer loss and hot corrosion in two-stroke crosshead engines — reducing the cleaning requirements and inspection frequency of undercrown areas.

Improved Crankcase Cleanliness

Balanced formulation combats crankcase sludge and varnish formation — keeping crankcase, main bearings, crosshead bearings and camshaft areas clean for extended periods between planned maintenance interventions.

Next-Generation System Oil Formulation

Advances beyond conventional system oil formulations — addressing the specific cleanliness challenges identified in modern slow-speed two-stroke engines through ExxonMobil's extensive marine engine research programme.

Low 9 BN — Compatible with Low-Sulphur Fuels

Low TBN system oil appropriate for crosshead engines where the cylinder oil provides the bulk of acid neutralisation — avoids the over-alkalisation of crankcase oil that can occur when high-BN system oils are used with low-sulphur fuel operating regimes.

Deep-Sea Vessel Crosshead Engines

System oil circuit of two-stroke slow-speed crosshead engines on bulk carriers, tankers and container ships — where improved crankcase and undercrown cleanliness reduces maintenance costs and unplanned downtime.

MAN ES & WinGD Engines

MAN ES and WinGD two-stroke crosshead engines — the dominant engine types in the deep-sea shipping fleet calling at South African ports.

Vessels with Deposit Challenges

Vessels where conventional system oils have not provided adequate control of piston undercrown and crankcase deposits — Mobilgard 300 C's next-generation formulation specifically targets these problem areas.