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there are a few kinds of BH that help cars start from extreme cold weather," \+ {# P5 p c
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.& I% B( }0 k$ h
Either way, the engine shall not be frozen with use of BH.) w& C$ b! K8 A9 W
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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.
( O7 }5 z! l0 ^+ S4 qA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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