Has anyone used peanut oil in their diesel fuel?

Terry Gable · Dec 18, 2012

I have about 10 gallons of used peanut oil (turkey frying) and was wondering if anyone has used it in their fuel? If so, did it work well or should I not bother trying? Thanks!

rdbigfarmboy · Dec 18, 2012

Filter it well. blend with diesel 50/50 and do not use in cool weather.

Copperhead · Dec 26, 2012

Yeah, the filtering is the most critical part. And I sure wouldn't run it thru anything that has high rail pressures and expensive injectors. On older diesels, it would be a non issue. The newer ones..... you might run into a lot of fuel filter clogging issues. Many fuel filters on the newer diesels are clear down to between 2 and 7 microns of filtering. Those injectors just can't take a stray particle getting in there and messing things up. But if you have a diesel that is using older injector technology, it might be a good way to use the oil up. Or you could give it to someone in your area that is home brewing biodiesel. They have the filtering to do the job right and also will get the glycerin out. You could buy the finished bio back at a fraction of what bio costs at the pump. Mix it in a 10-20% ratio to regular diesel and have a good time.

JD 4520 · Dec 26, 2012

But why? Your machine is with thousands of dollars and you're going to poor something foreign in it? I do know people that do but don't understand what the benefit is.

jveretto · Dec 26, 2012

I would not take the chance! My luck ain't that good. It would blow something up for me!

Dan Hunter · Dec 26, 2012

By the thread title, I though you meant unused. I had to do that once when my wife brought the 6.5 TD truck home empty so I pulled a gallon out of the pantry to get to the fuel station.

I can't justify saving 40 buck on fuel with the risk of trashing the fuel system. If you must see it used as fuel, find someone that's invested in a full blown system that'll pay you for it. Better yet:

You'd be way better mixing it filtered at 1 cup dish washing soap per gallon in a sealed concentrate 2/3 a cup of the concentrate shaken into a gallon makes a nice bug killer when sprayed on at temperatures below 85F.