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there are a few kinds of BH that help cars start from extreme cold weather,
, e% t( s: w; L" g9 Z3 t9 nbasically , 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.
' R( X6 _* O1 \1 f/ N3 WEither way, the engine shall not be frozen with use of BH.
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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.
+ X) \4 g0 `# C5 X( c/ H4 E- ~A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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