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Why did Ford revise the specification on the engine oil in many of their V-8 engines from 5W30 to 5W20?

April 26, 2017engine engines Ford Oil revise specification v-8

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Why did Ford revise the specification on the engine oil in many of their V-8 engines from 5W30 to 5W20?

1 Answer

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The lower viscosity oil provides better fuel economy and may be easier on the catalytic converters. Ford also felt 5W20 provides more than adequate lubrication for the engines specified.