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there are a few kinds of BH that help cars start from extreme cold weather,. {0 k- @9 n7 t- L2 m6 E/ a9 i
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.
$ v( Z6 L( C. P% qEither way, the engine shall not be frozen with use of BH.
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, D3 B! J: t5 S( U* q! NIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
0 \8 A7 T3 h( [' ]A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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