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there are a few kinds of BH that help cars start from extreme cold weather,
0 G) W5 j0 z; s+ }0 O. ]( K& X" L4 Lbasically , BH keep the car warm by heating up the oil pan-which keeps the engine oil from frozen, or by heating up the coolant, and keep the engine block warm.4 O6 o9 u7 v0 w; U& L, w
Either way, the engine shall not be frozen with use of BH.7 d" j/ E3 q! l: t. P# m
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If you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.* J3 v, N& e. j. I, q
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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