Straight out of the manual:

From +50 deg to +30 deg F SAE 20
+10 deg to +30 deg F SAE 20W
-10 deg to +10 deg SAE 10W
-30 deg to -10 deg SAE 10W plus 10% kerosene

With that said I run 15W40 year around. Oils today are much better than when those specs were written.


Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.