Propel Fuels in Chula Vista dispenses Flex Fuel E85 and Diesel HPR renewable diesel at 1495 East H Street, part of a California-wide network founded in 2004 and headquartered in Sacramento. The station's ASTM D975-certified Diesel HPR — refined from recycled fats and oils through advanced hydrotreating — delivers cetane ratings up to 75-plus, drawing fleet operators including diesel vans from EZ CAR RENTAL running South Bay routes. E85's 105-octane rating serves flex-fuel vehicles seeking a CARB-recognized low-carbon alternative that cuts CO2 emissions roughly 40 percent versus conventional gasoline. Propel's patented CleanDrive platform tracks cumulative carbon reductions per gallon purchased, giving commercial accounts and individual commuters a verified emissions-reporting tool. Tire wear from the heavier torque output of high-cetane diesel is one reason HPR users also rotate through American Tire Depot for alignment and tread-depth checks. Diesel HPR meets every OEM warranty requirement for ultra-low-sulfur diesel while delivering cold-weather pour-point performance equivalent to petroleum-derived No. 2 diesel.