Chevron's convenience-store concept arrives on University Avenue in La Mesa through ExtraMile, which combines a grab-and-go food program and locally roasted coffee with the co-located Chevron fuel islands at 8200 University Avenue. The Chevron pumps on site dispense Techron-additive gasoline across five grades including E85 flex fuel, and routine oil changes at nearby Jiffy Lube complement that fuel-quality commitment for high-mileage commuters on the University Avenue corridor. E85 availability at this location makes it one of the few La Mesa stations supporting flex-fuel vehicles that can run on ethanol blends between 51 and 83 percent, broadening the fueling options along this segment of University Avenue. Techron's polyetheramine-based detergent targets intake-valve and fuel-injector deposits in both port-injected and GDI engines, and post-collision structural work at Helix Auto Center addresses the mechanical side of keeping those same engines running to manufacturer specifications. E85 flex-fuel combustion produces lower tailpipe particulate matter and carbon monoxide than straight gasoline while requiring fuel-system components rated for the higher ethanol concentration, including stainless-steel fuel rails, Viton-compatible injector seals, and ethanol-resistant fuel-pump modules.