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there are a few kinds of BH that help cars start from extreme cold weather,
9 P+ J& E( x5 m) lbasically , 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.$ } \! e9 P2 r! W$ `4 A
Either way, the engine shall not be frozen with use of BH.& s- b! [7 E* ^1 X5 ^
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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.7 r% O$ G9 m5 w- K! k* p
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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