VOLVO COMPRESSOR OIL 85108974

Function and technical context

Compressor oil reference 85108974 is a specialized lubricant that acts directly on the internal components of the compressor integrated into Volvo Penta diesel engines, guaranteeing a continuous lubrication film between pistons, valves and bearings of the assembly. It works within the engine's pressurized air supply system, where the temperature and mechanical load conditions are notably more demanding than in the conventional crankcase. Its formulation with anti-wear properties and superior thermal stability prevents the formation of internal deposits and fluid oxidation under prolonged work cycles. If this lubricant deteriorates or reaches an insufficient level, the compressor can suffer premature wear of its moving components, which results in loss of air pressure, reduced engine performance and, in serious cases, failure of the compressor assembly with the consequent high repair cost.

When to replace this oil?

The most common symptoms that indicate that the compressor oil needs to be renewed are: presence of unusual metallic noises or knocks in the compressor during cold start, increase in the operating temperature of the assembly, appearance of bluish smoke in the exhaust or visible contamination of the fluid with metallic particles at the time of inspection. For Volvo Penta TMD series engines, it is recommended to check the condition and level of this lubricant at each seasonal maintenance or according to the intervals established in the engine service manual. Replacing the compressor oil preventively, without waiting for failure symptoms to appear, is the most effective practice to prolong the useful life of the equipment and avoid unplanned stops in navigation.

Compatible Volvo Engines

Equivalent manufacturer part numbers