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Old Jul 30th, 2012, 13:22   #70
Spike1918
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Not really, you need to consider what the oil does in comparision with what the coolant does and the areas of the engine they circulate in.
Modern oil viscosities are now frequently lower to enable cooler oil to get around the motor faster, cooler being less viscous (runny). This helps to eliminate wear on an engine with maximum tolerances as are found when a engine is cold.
Coolant surrounds the cylinder head and the block / barrels / liners, all high heat areas, but the bulk of the oil is contained within the sump, a realtively cool area of an engine.
That larger volume of oil takes longer to heat even though it`s pumped at prressure around the rest of the engine.
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