Fuel economy and additives
I drive a Forest River Georgetown w 4 slides an a V10 Triton gs engine. Typically i drive 62-65 mph on the hwy. I will be doing a gas log of my fuel economy, but I think it is 7.5 mpg fully loaded. I...
Forum Discussion
rgatijnet1 wrote:
I'm not sure if the Ford can use 85 or not.
I can use less than 87 octane fuel but it lights the Check Engine Light on mine (stock 1999 V10 2 valve) every time I hit a hill of any magnitude. I notice no drivability issues, but clearly, the ECU doesn't like it. If I clear the fault code, it returns promptly on the next hill or in a strong headwind. Switching to 87 octane cures the CEL issue every time. The Owners Manual clearly warns against using less than 87 octane fuel. Sometimes I forget to check when buying fuel at higher elevations. Ooooops. That **** light is on . . . . . . again.
Chum lee
