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there are a few kinds of BH that help cars start from extreme cold weather,$ r, @* u/ v5 i: Y* {+ H! u# X: t
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.
9 X4 R* q0 U6 h8 vEither 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.
0 m; m8 t$ V/ A8 m7 e5 X# EA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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