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there are a few kinds of BH that help cars start from extreme cold weather,
8 H: T' S m$ @* N4 z; P3 ^# O% Ubasically , 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.
; k# [: y1 D3 Y2 o) q8 i7 B8 gEither way, the engine shall not be frozen with use of BH.( R0 r3 ^. X( X, [
- E4 m% a; e( u, C6 ]% qIf you do not have BH on ur car, by using synthetic oil you can also prevent oil frozen from happening.
7 v8 R6 x0 f6 j# v3 W4 U7 z) L' sA good synthetic oil, 5w20 or 5w 30 , or 3w 20 has a pure point of -30 to -40 degrees. |
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