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there are a few kinds of BH that help cars start from extreme cold weather,
3 \+ J6 k- b7 l6 g+ X$ hbasically , 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.: {% g) e, K) M: c% w" X. Y3 @
Either way, the engine shall not be frozen with use of BH.
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% s! w9 m m" p) U+ w- OIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.+ M8 J: k/ U6 ~- e
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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