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there are a few kinds of BH that help cars start from extreme cold weather,
4 H3 \3 ?' b; y* L+ X" gbasically , 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.
1 U% [( ^- [3 ]" {1 N4 cEither way, the engine shall not be frozen with use of BH.: a9 g& W% R0 s5 e$ J) v2 C
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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.
! E. F+ D" V2 P+ a0 a4 t4 ? h4 v( PA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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