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there are a few kinds of BH that help cars start from extreme cold weather,$ G9 N' V; m! R4 ]3 |$ V
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.
3 Z+ h" Z9 Z2 D( Z E" IEither way, the engine shall not be frozen with use of BH.
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; y6 n9 S: m# {6 sIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
! [2 k6 I6 s- K; C- B5 i1 SA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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