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there are a few kinds of BH that help cars start from extreme cold weather,
3 O" p; s" q3 J, d3 N3 vbasically , 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.
% {+ r1 z3 t+ ^% b+ a$ i% `8 J* |; NEither way, the engine shall not be frozen with use of BH.
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* ^8 s- e1 Z6 o+ A# {If you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
' y) p `) e/ R) ~) }A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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