Engine oil weight wright-up!..???
The first number is the cold flow viscosity, you'll want it to be lower to flow better at start up. If you have piston slap on cold start up with a 0 weight oil, you'll have more piston slap with a 10 weight oil.
GC has the best long term resistance to breakdown and high temperature resistance. Like hitmanws6 said, it tests closer to a 40 weight.
It makes no sense that one of the better oils on the market was the sole cause of a blown engine.
HMMM, when will this thread turn into a "don’t use Fram filters" thread?
Last edited by Paul Bell; Dec 14, 2010 at 10:18 AM.
... & I was beating on the stock bottom end motor at LACR on a weekly basis. ... 





