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there are a few kinds of BH that help cars start from extreme cold weather,
5 X d( ~0 _# Y7 J1 dbasically , BH keep the car warm by heating up the oil pan-which keeps the engine oil from frozen, or by heating up the coolant/radiator, and keep the engine block warm.& l7 j, j8 N: x" O7 v
Either way, the engine shall not be frozen with use of BH.
& A- x& O* X. A5 W/ K5 p1 @! rGoogle block heater1 E- n* F3 _/ K# u8 j6 r0 k& e
) Q5 T9 p1 {/ E+ c& B6 R& j% HIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
- r" h7 Y1 H6 T. j$ |* Q cA good synthetic oil, 5w20 or 5w 30 , or 3w 20 have a pure point of -30 to -40 degrees.
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if you have BH or SO, but ur car still could not be started up, and you have not checked/replaced your battary before the winter came, I bet the battary is dead. |
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