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there are a few kinds of BH that help cars start from extreme cold weather,
) z) s3 w7 H9 R* Y$ O4 obasically , 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.( s8 E `/ P% C( x/ M% z$ C" i' C
Either 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.5 t9 S1 {% m& z, F; H7 o
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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