API Debuts Symbols for Identifying New Diesel Oils

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Heavy Duty Trucking  /  May 18, 2016

The American Petroleum Institute is introducing a special Service Symbol Donut designed to help buyers differentiate between the new API FA-4 and CK-4 service categories for diesel-engine oils.

The new donut features a shaded section to differentiate API FA-4 oil from CK-4 oil. The API CK-4 Service Symbol Donut will look the same as the current CJ-4 Donut.

API approved the new FA-4 and CK-4 diesel oil standards earlier this year, which are designed to protect the next generation of diesel engines.

“API is introducing a diesel engine oil category for use in truck engines designed to meet 2017 model year on-highway greenhouse gas emission standards,” said Kevin Ferrick, senior manager for engine oil licensing. “The FA-4 donut was developed to help truck owners who need FA-4 oils easily recognize the oil and distinguish it from CK-4 oils.”

Manufacturers recommending CJ-4 engine oils will most likely recommend API CK-4 oils as soon as they are available to better protect current diesel engines, according to API. API FA-4 oils will be formulated to protect diesel engines that are expected to be introduced in 2017.

API recommends that technicians and truck owners check with the manufacturer of their engine to determine the correct oil to use.

For more information from API on the new diesel engine oil standards, go to NewDieselOil.com.

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