Originally Posted By: Bryanccfshr
Originally Posted By: OVERKILL
Originally Posted By: Johnny2Bad
If SAE 20 is good for your motor, then 0W-20 will be good for your motor, regardless of the ambient temperatures.
Remember a SAE 0W-20
must be a 20 weight at slightly above room temperature or any higher temperature, such as those inside any operating engine. If not, it can't be rated an SAE XX~20 oil.
Negative.
0w-20, 5w-20, 10w-20, 15w-20, 20w-20 and SAE 20 must all fall within the J300 range for the 20 designation at 100C, which is presently 6.9 to 9.3cSt. There is no requirement for them to be within a fixed viscosity range at any other temperature.
A straight 20 will have a higher HTHS than your typical multigrade xW-20 because it will not be a thinner base thickened with VII's.
I was having fun with him with the room temperature example that you could set a pot of water in and add eggs and seven minutess later have hard boiled eggs.
Saw that