 鲜花( 0)  鸡蛋( 0)
|
there are a few kinds of BH that help cars start from extreme cold weather, I7 t' [% k3 @# b
basically , BH keep the car warm by heating up the oil pan-which keeps the engine oil from frozen, or by heating up the coolant, and keep the engine block warm.8 d# S6 M$ e# f5 E q/ M# W$ B
Either way, the engine shall not be frozen with use of BH.
! F$ e& C* d0 N" A
- Q0 e+ ?* ]! T; {) kIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.! _5 ?( o+ ^) t$ y) G
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
|