ATF & motor oil mixed in fuel

[Guest 007]

Am looking at the various posts of mixing ATF in with fuel or when changing fuel filters. I can get used ATF by the gallon from a local place that does the changes for Auto Trans cars. If I filter it well before adding to the fuel & mix in a few gallons per fill up, will it do any harm to the injection pump, lines, tank or the engine?

Same question on used motor oil? If I filter it well and add to the diesel fuel, will I have any problems as a consequence of using it? I don't mind a bit of smoke as much of the driving is dirt/mountain/back country roads with little or no traffic.

Is there any downside to adding in a gallon or more of one or the other, or each, when I fill up the vehicle each time?

Not veggie oil but at least it would be recycling & I can get this stuff free.

[rvitko]

Besides any particulate you could filter both have a tendency to become corrosive from acid formation during use, this could cause problems long term. ATF has the added problem that it will tint your diesel red, if a state trooper samples your tank and it comes up red you will be fined about $2k for using farm diesel which is not taxed. Also keep in mind that if you are getting a lot of soot in your exhaust some of that has to be deposited in the engine and that will eventually cause parts to wear prematurely.

[Guest 007]

I'm not too worried about the Highway Patrol & that farm fuel thing. It is easily beaten.
The engine, injectors & injector pump is what I would be worried about. If I am getting good performance & add some fuel additive like Stanadyne every tank as I do now would this fuel mix do any harm?

[Morninglight]

ATF has good cleaning capacities.. running your diesel on ATF is no problem, it is thin and doesn't eat seals away.

You could let the engine suck out of a seperate canister instead of dumping it into you tank.