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there are a few kinds of BH that help cars start from extreme cold weather,+ W) M7 I0 w3 l
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. [' D- e. v6 G/ e+ q9 y3 y
Either way, the engine shall not be frozen with use of BH.
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% k/ ~( r" p* C* v1 D: Y3 gIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
5 B9 n' ^2 C# {, G! v4 b% Z. MA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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