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there are a few kinds of BH that help cars start from extreme cold weather,7 L/ V: L$ r( y& _% g
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.& }; U: U! u) j' S, }0 w6 U9 ^. |
Either way, the engine shall not be frozen with use of BH.5 v! G% m" ^; l4 ?
2 U5 U, i2 F0 i+ C" m$ _7 B! pIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.- `3 ~: J, h6 X" d0 f
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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