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there are a few kinds of BH that help cars start from extreme cold weather,
7 j3 ]( w5 d& T0 D+ `5 g1 F( L# G6 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.
. g2 o" K- W% y, TEither way, the engine shall not be frozen with use of BH.
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: {7 [2 s# M1 O- c0 [# u4 uIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.' s2 v2 h5 l4 @
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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