High operating temperatures, reduced engine cooling and prolonged drain intervals contribute to oil thickening, heat retention and deposit formation. These heavy deposits can impede normal piston ring function; thus reducing fuel economy, lowering power output, and increasing harmful exhaust emissions and oil consumption.

Petrol Direct Injection engines are specifically prone to early deposit buildup on the piston surface, intake ports, injector tips and valves. As early as 32,000 km, deposits in GDI engines can cause dramatic efficiency losses and misfire codes with low km. Australian specific conditions such as heat and low-quality fuel hasten engine oil degradation. Add extended oil change intervals and these engines provide a lengthy incubation period for carbon deposits. Even high-quality synthetic oils will degrade eventually. Unless the oil is fortified with enhanced protection against high heat, premature and hard-to-remove deposits will form on many engine components.

Australian petrol fuel standard is far from world standard, resulting in faster deposit buildup and inefficient ignition, combustion and power output. In fact, Australian Petrol fuel can contain up to 15 times more sulphur than the rest of the developed countries. Downsized, boosted engines are extremely sensitive to deposits that build up in fuel injectors, intake ports, on intake valves and in combustion chambers. Even small amounts of deposits cause increased exhaust emissions, reduced fuel economy, and drivability problems.