ACEA Class Definition

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• B1 : Diesel engine oil whose viscosity protection feature exceeds CCMC PD-2 limits, provides fuel economy and is valid for low viscosity classes.

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• B2 :Conventional diesel engine oil, generally in CCMC PD-2 performance, with improved viscosity retention.

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• B3 :High performance diesel engine oil whose viscosity protection feature exceeds CCMC PD-2 limits and whose viscosity increase is controlled under heavy soot.

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• B4 :Diesel engine oil that has passed direct injection engine tests in addition to B3-98 performance.

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• B5 :Diesel engine oil with low viscosity class, high friction reduction feature, long oil change period, providing fuel economy in indirect and direct injection engines.