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there are a few kinds of BH that help cars start from extreme cold weather,
4 z- ?, E! E% A, _1 ]+ abasically , 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.
) z. N' C6 B9 Z5 @* v. n8 AEither way, the engine shall not be frozen with use of BH.
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3 X8 B1 Z7 P9 c3 r3 W% K5 rIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
0 u$ T5 A; q" i( ? T- b4 Y, rA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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