Quote Originally Posted by Kiz_EG6 View Post
.... the oil was probably like water!!
won't be as severe as turning into water..

Somebody correct me if I got it wrong...but I think SAE ?W-30 are suitable for under 38 degree ambient temperature???

Then again, it depends on more things such as the conditions of the engine and its oil to start off with, how efficient is the cooling system working and what load the engine is under too...