Originally Posted By: Garak
Originally Posted By: Shannow
Oz specced 20W50 for the super 6, with 15W40 in "prolonged" cold conditions.
Yes, Australia is know for those prolonged cold conditions.
If one insists upon synthetic and thinks an ILSAC 5w-30 is too thin, once again, a 10w-30 ILSAC grade isn't the answer. Personally, I'd probably run a 5w-30 ILSAC grade in it all year, but something like Delvac 1 LE 5w-30 would be a bit thicker. GC 0w-30 or 0w-40, or M1 0w-40 would be fine, too.
And I'd grab a 15w-40 conventional before a 10w-40 conventional, Australian prolonged cold conditions or not.
Garak,any advantages/disadvantages to running an HDEO 15W40 over a PCMO 10W40 in a car that originally specd an SJ rated oil (my 300ZX)?