On my F250, I never really needed to use the rear tank, I could go pretty far even at 13mpg before needing to refuel. I always thought about it but never did.
It's a bit worse in the RV at about 9.2 hwy MPG. It calculates as ~8 sometimes and ~10 at others. My average this month so far, including a small amount of city driving, is 8.9mpg. (I wish I could find a free C6 overdrive and 3.55 rear end for double digits, ha!)
Sadly, fuel prices are going up suddenly. Diesel has jumped 10-15 cents since 4 days ago. I think I need to start using my rear tank to save on fuel costs. But, who knows when it was last used. There's no telling how nasty it is.
Would something like Power Service Clear-Diesel be adequate to dump in the tank before I fill it up? They say.... "The Fuel Polishing Formula of Clear-Diesel Fuel & Tank Cleaner removes water and slime, disperses contaminants and stabilizes fuel during long-term storage."
Or am I asking for trouble by suddenly using it without dropping it and properly cleaning it? I get that I might need to change my fuel filter soon after, but for ~$25 (cleaner+filter) I would have my rear tank to use. It would take a long while to recover the $25 cost, but still. The longer I put it off, the worse it's going to be.
My selector valve seems to be working, or it clicks at least, so there's a chance it's fine. What typically kills them, excessive use? If so, I doubt it's been used much, being so low miles.
It's a bit worse in the RV at about 9.2 hwy MPG. It calculates as ~8 sometimes and ~10 at others. My average this month so far, including a small amount of city driving, is 8.9mpg. (I wish I could find a free C6 overdrive and 3.55 rear end for double digits, ha!)
Sadly, fuel prices are going up suddenly. Diesel has jumped 10-15 cents since 4 days ago. I think I need to start using my rear tank to save on fuel costs. But, who knows when it was last used. There's no telling how nasty it is.
Would something like Power Service Clear-Diesel be adequate to dump in the tank before I fill it up? They say.... "The Fuel Polishing Formula of Clear-Diesel Fuel & Tank Cleaner removes water and slime, disperses contaminants and stabilizes fuel during long-term storage."
Or am I asking for trouble by suddenly using it without dropping it and properly cleaning it? I get that I might need to change my fuel filter soon after, but for ~$25 (cleaner+filter) I would have my rear tank to use. It would take a long while to recover the $25 cost, but still. The longer I put it off, the worse it's going to be.
My selector valve seems to be working, or it clicks at least, so there's a chance it's fine. What typically kills them, excessive use? If so, I doubt it's been used much, being so low miles.
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