quote:Originally posted by Rick:
So why does it say -40 on the back of the bottle?
It says the oil provides for "unaided" starts down to -40. This means you don't need a block heater or sump heater with this oil at temps down to -40. For this oil to flow freely enough at -40 to provide for unaided starts, its pour point has to be lower than -60 F, which it is at -81 F. Borderline pumping is usually about 20 degrees above the pour point, so figure -60 F for this oil.
[ December 03, 2003, 10:30 PM: Message edited by: G-Man II ]