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there are a few kinds of BH that help cars start from extreme cold weather,
# i7 t5 Z+ K" c5 }$ jbasically , 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.$ R% h9 [, \ ^. Z; y+ b1 j
Either way, the engine shall not be frozen with use of BH.
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* A5 u8 L' C$ H$ I" b* LIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
: g8 e W/ r0 c; L/ QA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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