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there are a few kinds of BH that help cars start from extreme cold weather,# Z" S2 X R. q, w, \
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, and keep the engine block warm.
) {& b/ r5 ~2 D1 l, dEither way, the engine shall not be frozen with use of BH.# Z! Q9 P$ ? d$ C& H
: w, l. S4 n6 i- @; Z) {0 A; NIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.1 ?# o2 C8 v. {; J
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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