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there are a few kinds of BH that help cars start from extreme cold weather,
5 K- |/ P" d* q1 R% T3 Bbasically , 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.( u% n, \8 H5 K: Z8 Z
Either way, the engine shall not be frozen with use of BH.. _: O& t; O$ G
Google block heater* z( x1 z5 ~$ b
" N8 y1 x5 R" Q' iIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.9 K8 G. P0 ~/ p9 ? ?7 x
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 have a pure point of -30 to -40 degrees.: I4 c, P2 ?- l" b' Q$ _
$ _* W' z* c2 x2 c- l |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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