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there are a few kinds of BH that help cars start from extreme cold weather,
2 l4 W& }7 K6 T- [( T+ D# qbasically , 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.; K$ R( X* V% o- t6 ~. C
Either 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." I9 \& w4 ^; V8 c9 H1 k9 ?8 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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