Which octane for new Ford V-10
The manual says 87, but for better performance (hot weather, towing) use 91 OR HIGHER. Just wondering what the real world experience has been. The dealer gave us a full tank, but you know he put 87 in...
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I just got to this thread.
Our previous coach, a '99 Fleetwood Bounder 34V with the Triton V-10 (275HP version) and F-53 chassis, normally was fed 87 octane due to where we live in So CAL at the time of use. But, when we went on a trip from San Diego to Moab UT for an Easter Jeep Safari one time, I stopped for fuel in UT and just started pumping what I thought was 87 octane.
I wondered why the price was so low compared to CA (other than the normal price that's lower than CA). When I looked at the pump and what I was pumping, it was 85 OCTANE!!!!!!!! I immediately stopped pumping but, had already put over 20 gallons in. (the pump was fast) Anyway, since I'd put that much in it already, I figured what the heck, just keep going. So, I filled it with 85. The tank had about 1/4 in it when I started filling it.
So, off we went. In the ensuing miles, I noticed absolutely ZERO difference in any phase of engine operation. NO pinging, no loss of power, no temp differences, no starting problems, NOTHING. So, guess what, I also ran that 85 octane in our Jeep when we got to Moab. We were there for a week so, without a doubt, as many runs as we went on and the amount of times I'd re-filled the Jeep, it was no doubt, running on pure 85 after a bit.
It to showed zero signs of issues by running on that 85. So, after that, each time we went to Moab from San Diego, I'd fill the coach and Jeep with 85 and never looked back. It worked, plain and simple.
Scott
Our previous coach, a '99 Fleetwood Bounder 34V with the Triton V-10 (275HP version) and F-53 chassis, normally was fed 87 octane due to where we live in So CAL at the time of use. But, when we went on a trip from San Diego to Moab UT for an Easter Jeep Safari one time, I stopped for fuel in UT and just started pumping what I thought was 87 octane.
I wondered why the price was so low compared to CA (other than the normal price that's lower than CA). When I looked at the pump and what I was pumping, it was 85 OCTANE!!!!!!!! I immediately stopped pumping but, had already put over 20 gallons in. (the pump was fast) Anyway, since I'd put that much in it already, I figured what the heck, just keep going. So, I filled it with 85. The tank had about 1/4 in it when I started filling it.
So, off we went. In the ensuing miles, I noticed absolutely ZERO difference in any phase of engine operation. NO pinging, no loss of power, no temp differences, no starting problems, NOTHING. So, guess what, I also ran that 85 octane in our Jeep when we got to Moab. We were there for a week so, without a doubt, as many runs as we went on and the amount of times I'd re-filled the Jeep, it was no doubt, running on pure 85 after a bit.
It to showed zero signs of issues by running on that 85. So, after that, each time we went to Moab from San Diego, I'd fill the coach and Jeep with 85 and never looked back. It worked, plain and simple.
Scott
