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there are a few kinds of BH that help cars start from extreme cold weather,
5 ?4 q: p+ S$ R* Y' _% Ybasically , 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.
& m3 h' o# m. @ lEither way, the engine shall not be frozen with use of BH.% O( Q; @# }4 r
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If you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening./ K' z) T1 R# m" T* m
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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