We have been running your 75/90 gear oil on our chain and bearings in my 9 year olds race car for a very long time and in his race car the more free it is the faster it goes and we have yet to have any problems with it,its a great product and we recomend it to everyone that we race with, we account his 1 in the points standings to due with alot of your product and of course his skill in driving. Thanks again John from Five "L" Racing