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there are a few kinds of BH that help cars start from extreme cold weather,
6 U5 _. k# B( q0 F) y% b9 abasically , 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.
* t- @; _4 M( }4 V2 c- s- hEither way, the engine shall not be frozen with use of BH.: X! Q+ ^. I% R( b% a
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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.- i& w3 v( v& O1 J A6 A! N
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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