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there are a few kinds of BH that help cars start from extreme cold weather,, K" S& \* e/ R! q
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.% l+ _: U# Y. r @
Either way, the engine shall not be frozen with use of BH.6 a: V" Z3 p1 T6 D
Google block heater2 I7 F9 [% W# |3 W% J6 ]
, ?/ K' s. b$ j7 PIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.2 e0 `& p7 ]8 X2 r+ o
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 have a pure point of -30 to -40 degrees.) F! Q% W7 q. @+ I G
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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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