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there are a few kinds of BH that help cars start from extreme cold weather,+ s0 i0 v4 S/ 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./ S% Y7 N0 E. o0 H
Either way, the engine shall not be frozen with use of BH.' h$ Y4 C. b# ?$ S# U9 \' w
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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.
) l* D6 Y- z# A. q( }A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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