At present GM are against the NOACK test, and Ford use ASTM but may switch to NOACK. ... Transmissions and gearboxes In the automotive manual transmission and axle oils sector, SAE 75W-90 is only slowly finding favour ... According to a synthetics paper from Castrol (Coffin, Lindsay, Mills and Lindenkamp, 1990) lubricant oil temperatures at high speeds can be 30 *C cooler with a synthetic. In the USA Eaton Axles have issued new a#39;Road-Rangera#39; specifications for full synthetics.
|Title||:||What's new in lube oils?|
|Author||:||Institute of Petroleum (Great Britain). Energy Economics Group|