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there are a few kinds of BH that help cars start from extreme cold weather,, P9 c6 G) G$ s+ l# h
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.
( e* M( [! x$ N0 b; Z" V$ m9 TEither way, the engine shall not be frozen with use of BH.
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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.
& Y8 `/ E0 M; O$ V8 m" mA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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