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there are a few kinds of BH that help cars start from extreme cold weather,* ?/ H. U2 A) x0 n' `# e
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.: x7 h6 f$ g1 _6 G# O/ H* V
Either way, the engine shall not be frozen with use of BH.
% O) c( P* u8 \& D) |; _( }Google block heater# s! b# w" I7 k% N! V9 s
- |$ n; ?- D7 c5 g2 yIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.1 M) R4 v. z0 z2 K) c( A! O# g
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 have a pure point of -30 to -40 degrees./ m% ^* J( T$ K% y' E
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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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