Posted on 6/19/2017
Engine oil now operates camshaft timing and other vital functions effecting power, fuel economy, and emissions. Car manufacturers have been trying to vary the camshaft timing of the intake and exhaust valve openings for years. While it became common place on racing car engines in the 70’s and 80’s no major manufacturer had been able to reliably incorporate it into production engines until Alfa Romeo introduced it on its fabled two liter twin cam four in 1982. Even then, its performance was unreliable at best. The breakthrough came with the convergence of several improvements and changes in engine design. Firstly, the thinner lubricants, such as 0/10 weight engine oil, used to lower emissions and improve fuel economy came out, along with the improved machining technology needed to maintain the close tolerances required to use such thin oil. Secondly, increasingly sophisticated engine management computers became capable of improved multitasking, and thirdly, intelligent CAD ... read more