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there are a few kinds of BH that help cars start from extreme cold weather,
$ |& z0 f+ t+ v! F4 d( @6 J6 gbasically , 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.
, v) K; Z- S" g* MEither way, the engine shall not be frozen with use of BH.. l4 o% `6 F, j! `. b% j
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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., ^3 V- q7 U) J5 I
A good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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