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there are a few kinds of BH that help cars start from extreme cold weather,
4 g' ]) w. X7 s4 @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.
" z# Z( k' ]; t- cEither way, the engine shall not be frozen with use of BH.4 Z5 ~9 n+ b$ r6 o* \% ]3 ~5 i
- A9 y9 X) c2 \2 QIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening. \: `) o4 X3 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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