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there are a few kinds of BH that help cars start from extreme cold weather,
0 d7 _5 s0 H& | E6 Ebasically , 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.
3 @5 B( D, ^! E" l, n: ` sEither way, the engine shall not be frozen with use of BH.
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! _/ T# P6 Z; U# c& OIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.! ], A: B' n% l4 ], ]( q( s3 D
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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