Patman
Staff member
Here are the cold weather specs for 5w30:
Cold Cranking Viscosity @-20°C, cP (ASTM D-5293)
5,073
But this is the spec for the 10w30:
Cold Cranking Viscosity @-25°C, cP(ASTM D-5293)
4,500
So not only is the 10w30's number lower, but at a colder temp too!
Or are these specs wrong?
I got them here:
http://www.schaefferoil.com/data/703.htm
http://www.schaefferoil.com/data/701.htm
Cold Cranking Viscosity @-20°C, cP (ASTM D-5293)
5,073
But this is the spec for the 10w30:
Cold Cranking Viscosity @-25°C, cP(ASTM D-5293)
4,500
So not only is the 10w30's number lower, but at a colder temp too!
Or are these specs wrong?
I got them here:
http://www.schaefferoil.com/data/703.htm
http://www.schaefferoil.com/data/701.htm