Technical Paper
An Experimental Study of Oil Consumption in Gasoline Engines
1992-10-01
922374
The purpose of this experimental study was to investigate the relative influence of the physical characteristics of monograde and multigrade lubricants on engine oil consumption, taking into account different engines and different operating conditions. A bench test program on FIAT FIRE 1000 and BMW S14 gasoline engines was carried out using an automatic oil consumption measuring equipment. The interaction between simulated driving conditions (highway, hill-road) and oil consumption was studied using lubricants differing in volatility and rheology: the results showed the importance of volatility in limiting oil consumption; the influence of viscosity was more complex, as it depends on the engine; the role of VII polymers was also pointed out. The hill-road for FIAT and the highway for BMW were identified as the most severe driving conditions.
