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there are a few kinds of BH that help cars start from extreme cold weather,9 c% T9 |1 f G8 b: R! [+ @
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.
. E- y8 M. a n5 z" R5 y L) IEither way, the engine shall not be frozen with use of BH.- Q: X6 J2 ^( ?0 `0 O) r* K
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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.
% c' _, i% y& h( V) c& X8 b: o* MA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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