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International Automotive Technicians Network
Re: Fuel economy
Posted to Technical Discussion Forum on 1/25/2018

RVP is Reid Vapor Pressure, a measure of the volatility of gas. When fuel switches from winter to summer formula, or vice versa, mileage can be affected. With no long term notes as to mileage it may be the mileage changes every seasonal fuel change but she jus... Login to read more.