 鲜花( 0)  鸡蛋( 0)
|
there are a few kinds of BH that help cars start from extreme cold weather,4 H9 x! [& m$ g7 [' G6 f
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.
: j1 a6 x6 s3 n( ~Either way, the engine shall not be frozen with use of BH.& f2 o) K9 [1 [/ |3 @! c! @
$ o/ B' n. g# n4 E6 ]. z. b9 }
If you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.% M; L6 T2 U+ a3 w7 E
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
|