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there are a few kinds of BH that help cars start from extreme cold weather,
: B. \% L3 H4 p. A# Jbasically , 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.
0 U( W- p0 v) vEither 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.8 O% e" g5 k- {* m4 o# 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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