Mobilgard™ 12 Series (312 & 412) — Trunk Piston Engine Oil | Distillate Fuel

SAE 30 / 40

312 / 412 Grades

15 BN

TBN mgKOH/g

Distillate

Low Sulphur Fuel

Trunk

Piston Engine

Excellent Thermal & Oxidation Stability

Extended periods between inspections, overhaul and cleaning — maintaining oil integrity and engine cleanliness over long service intervals in distillate-fuelled trunk piston engines.

Improved Anti-Wear Properties

Reduced ring and liner wear — extending the overhaul interval of fishing fleet engines and high-speed marine diesels operating under severe conditions.

Excellent TBN Reserve & Retention

TBN of 15 mgKOH/g provides sustained protection against corrosive wear from combustion acids — appropriate for distillate and light fuel blend applications.

Superior Water Separation

Superior water separating properties protect engine components in the moisture-laden marine environment — preventing emulsification that reduces oil film strength and accelerates corrosive wear in marine diesel crankcases.

Excellent Detergency & Dispersancy

Increased oil service life and cleaner engines — keeping crankcase, camshaft and ring belt areas free from deposits that cause increased oil consumption and reduced engine efficiency.

Excellent Corrosion Protection

Resists oxidation and viscosity increase over long service periods — providing excellent corrosion protection for all bearing and cylinder surfaces in the salt-laden marine environment.

Fishing Fleets

High-speed marine diesel engines in fishing vessels along the South African coast — particularly effective in small bore, high-speed engines where distillate fuel is standard.

Medium-Speed Trunk Piston Engines

Medium-speed marine diesel engines on coastal vessels, ferries and workboats operating on low sulphur distillate fuels or light fuel blends through South African ports.

Severe Service High-Speed Engines

New, severe service high-speed marine diesel engines requiring a high-quality distillate-rated trunk piston engine oil with excellent thermal stability and anti-wear properties.

Crosshead Crankcase (412)

Mobilgard 412 may be used as a crankcase lubricant in large crosshead type diesel engines operating on high sulphur fuels — separate from the cylinder oil circuit.