GC..Does anyone know what the border line..

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Patman

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quote:
Originally posted by Rick: Pumping temp for the GC 0W-30 is?
Colder than you're likely to ever see in your neck of the woods. It's probably somewhere around -60F or colder, since it's pour point is -81F.
 
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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 ]
 
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