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there are a few kinds of BH that help cars start from extreme cold weather,
( ?6 Q6 @9 j! f! v" T# x( O' Lbasically , 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/ Y) u3 s" w6 R n
Either way, the engine shall not be frozen with use of BH.0 R3 S' H; k. x! O" i
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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.( r6 z; u5 D, n1 d. x
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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