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there are a few kinds of BH that help cars start from extreme cold weather,# T, v1 w. g7 v0 Y5 V5 {; s
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/radiator, and keep the engine block warm.& c3 z) e; u) g8 r r! b
Either way, the engine shall not be frozen with use of BH.
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* l8 P; n# ~4 cIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
3 v1 b S9 V2 J; gA good synthetic oil, 5w20 or 5w 30 , or 3w 20 have a pure point of -30 to -40 degrees.: R5 i3 q2 b* }: e6 t
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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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