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there are a few kinds of BH that help cars start from extreme cold weather,1 z% P; M4 @: A
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.
4 _/ m6 G" z. {* q @2 q# eEither way, the engine shall not be frozen with use of BH.
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0 W' A& r% J- A6 oIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
7 e4 Q7 T* r4 [' GA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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