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there are a few kinds of BH that help cars start from extreme cold weather,$ g+ U( L+ O6 @! }6 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.0 p7 c% ~ f/ p
Either way, the engine shall not be frozen with use of BH." n, f |4 @" f3 @% R& {0 ?
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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.' D) g0 C: {) `% x/ R# o# Z! Z
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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