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Rotella Oil Question
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11-28-2018, 09:54 PM
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Gary in La.
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Join Date: May 2010
Location: Louisiana
Posts: 866
Re: Rotella Oil Question
Modern diesel engines use an additive called DEF which is a urea based fluid. It helps remove the nitrogen oxide which is detrimental to cat converters and the air we breath.
Gary in La.
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