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there are a few kinds of BH that help cars start from extreme cold weather,2 {8 o' W) i$ n8 q* ^; x. I7 L" L
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." Q7 R" P, P) ?1 y8 X
Either way, the engine shall not be frozen with use of BH.
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5 a; C2 a/ a& u/ T+ l% DIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
( A& \+ E# V% p+ I4 z }A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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