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there are a few kinds of BH that help cars start from extreme cold weather,
3 M, R+ h# N' } 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.
. R' ?/ c/ s- [0 \) n( xEither way, the engine shall not be frozen with use of BH.& B+ G" c: M2 o$ d7 W- l$ Q
& Z m2 j2 Q6 L0 nIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.+ i- U7 S) M6 F( l
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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