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there are a few kinds of BH that help cars start from extreme cold weather,
2 d. w) C* K+ ]7 w$ E% Dbasically , 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." M" T4 D) P, [. n3 F* m9 e
Either way, the engine shall not be frozen with use of BH.3 h3 D$ J+ P0 M
4 I4 u$ ~8 N" p7 AIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
1 f2 C# O; R& W/ g E: L3 s$ Q6 mA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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