Ranger520VX

I have a 1999 Ford F-350, 7.3 turbo diesel with 240,000 miles. I use Marvel Mystery Oil from Walmart with each fill up. I have a 40 gal fuel tank & I use 16 oz per fill up and I get anywhere between 3 to 5 more mpg. I have tried everything made for a diesel and this works best. I have been using it for a long time & will continue to use it. Works good in gas burners also.

JALaswellSr

One thing I was not aware of is that a Diesel can run backwards. It happened to my son with his 1210 Ford tractor recently. The battery was down so he used jumper cables to start it and didn't wait for the tractor battery to charge a bit. It turned over slowly and started but sounded very unusual and when he let out the clutch in reverse it went forward with little power. My neighbor that has worked with diesels all of his life said they do sometimes run backwards and usually when started with a very low battery current. That is why my little Briggs-Farryman diesel has a controlled compression release for hand starting with a crank. You get it up to a good cranking speed before the compression hits and fires the engine. I guess they knew it could break an arm if you didn't.

Country Boy

I guess in theory a diesel could run backwards because there is no carburetor to draw air through for the fuel air mixture. The diesel is injected directly into the cylinder by the pump. I know the old Detroit diesels (2 cycle) could run backwards because my vet had that happen to him when he worked at a steel yard while in vet school. Had to back up to a giant slag pit with a truck that had to be pull started with the engine running backwards (he had to use 1st for reverse) hoping he didn't snub it or screw up and accidentally back into the pit. It had snubbed out on him earlier and he popped the clutch to restart it on the hill he was on, but he had it in the wrong gear so the engine started backwards.

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'76 IH 1066 Turbo Diesel, '73 IH 766 Diesel, '72 IH 574 Utility Gas, '56 IH 350 Utility Gas, '46 Farmall H Gas, '08 Bobcat Toolcat 5600 Turbo

Nobody puts that "C" word in front of MY International!