type of gas for ford V10?

My '04 seems to run noisily on 87 octane when working hard so I run premium if I will be climbing. I bought a new knock sensor, but in spite of the diagrams, I can't figure out where it is mounted, so, it just sits in the box.

Well,
In our previous coach, a '99 Fleetwood Bounder, it had the first version of the V-10. It also had the Banks full kit on it. It was a 34' unit with a single slide and, it never moved an inch without towing something. So, it was always loaded to the max. We ran from So CA to Moab UT for the Easter Jeep Safari for 14 years in a row. Whenever I hit Utah and needed gas, I put in the 85 octane stuff.

That motor home never knew the difference. There was no ill effects what so ever. The gas mileage never suffered. 7.0 mpg is 7.0 mpg, no matter what fuel I ran through it. My son pulled the plugs for a replacement at about 30K and they were flawless.
Scott

I always used regular unleaded 87 Octane in my V-10 when I owned it.

"Most modern engines adjust for the fuel that they're using" this was true for my 02 V10. My scan gage showed the ignition was retarded under loads with 87 octane. I switched to the medium grade, the engined spark was not retarded as often and the extra cost was a push due to a slight increase in mpg. This was over about 2 years and 15,000 miles east of the Mississippi.

JMichael
Newmar KADP 4084

Most modern engines adjust for the fuel that they're using. I run 87 octane in my cars and when I had my Class A gasser, it ran well on 87 octane, but I would occasionally run a tank of premium when I found a good price. Higher octane on those days you're hill climbing can't hurt.

I have used regular in my motorhomes for years....10% ethenol is all that is avaailable in this part of south Texas. No problems but I use two or three cans of cheapest gas stabilizer in every other tank and in my lawn equipment. It may help....

I have a feeling that in 6-12 months, this discussion will happen again, except it will be over E-20 replacing E-15.

I think this thread has shown one thing... the next MH I buy, I am going to see about either a fuel petcock on the generator fuel line, just so I can run the genset dry before storing it. Gas isn't going to get any better in quality anytime soon, so might as well take steps to keep the carb drained when the generator isn't in active use.

As for the OP, use the lowest octane up to the engine's standards. Higher octane does nothing and actually may damage things. I do prefer using Chevron gas over no-name brands (although it is pretty much the same dino juice) due to my generator being finicky, where it will run well on Chevron, but the station down the street has gas that causes it to surge/hunt constantly.

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Here's a map that shows who gets mandated what for ethanol -



With some good reading about ethanol formulas -
http://wearethepractitioners.com/library/the-practitioner/2012/03/15/the-gasoline-bobs-cbob-and-rbob-%28and-carbob%29

But being that ethanol is so heavily subsidized by our tax dollars it's cheaper to lower octane with ethanol than previous methods. Hence distribution outside metro areas is most likely 10% ethanol.

So if 10% is cheaper to produce than 0%, how likely are lobbyists pushing for 15%? It's all about money.

If your V-10 is designed for 87 octane then run the cheapest 87 you can find. REMEMBER, HOWEVER that it's the same ethanol that will be sitting in (to gum up and corrode) your generator's fuel system. Running the generator periodically can keep bad things from happening, or draining the float bowl between uses (but who does that?).

Best,
- bob

Yea, we have had ethanol for twenty years too.. But this is not about 10% which works fine for our vehicles, This is about going above that to 15%.. That creates problems and does do damage..

Oh the humanity, the ethanol scare but once again. :R

We've had ethanol in the state I am from for over 20 years. Each and every vehicle including my MH's that I have owned have all been fed ethanol. They all ran fine the majority of them running over 100,000 miles without any problems. Just like the hundreds of millions of all the vehicles on the road running on ethanol additives.

Those of you who have not had ethanol come to your state yet or it just arrived, give it a rest.