NEWBIE considering WMO

[tahiti14]

Hello all,
I have researched in depth the WMO topic. I was just looking for any final advice from the experts. I have a 96' 7.3 Power Stroke with 175k miles on it. I am going to set up a filtration system that starts at 10 micron and then 3 micron via and electric pump that runs off the battery. I could actually filter it when I picked the stuff up if I wanted. Has anyone had any problems in the 7.3 running WMO? Are there any considerations I need to be thinking about? I was planning on this filtering process then using an 80/20 mix most of the year and 50/50 in the winter. I have a 2 tank truck so when I start out I was going to leave diesel in the one tank if I had any problems. Any advice on the best way to obtain good WMO? Thanks everyone!

[fordnut74]

I typically recomend against using WMO as the primary fuel source. Maybe using your own oil occasionally mixed in with a few hundred gallons of veg, but that is it. However, I do not have any hard evidence against it. If you intend to use WMO regardless, then I would filter it down to less than 1 micron absolute if possible. Keep in mind that waste motor oil by nature contains metal wear particles. A bearing surface in an engine may see a up to several hundred psi at clearances of .0020. Where injector clearances will be .0001 and up to just over 20,000 psi. So fine metal particles that will barely even nick an engine bearing will quickly destroy an injector.

However with that said, much the same logic applies to WMO as WVO, if you can get your WMO for free or cheap, and you get only "50,000" miles on your injectors, you are still money ahead after replacing injectors. Long Story short, when using WMO, make sure you filter, filter, filter.

[cantrellc123]

I have been using a 50/50 mix of WMO beginning about Nov. 1st of 08. Since then I have put 33k miles on my truck. I will soon be having this truck live tuned and I was curious as to the condition of the injectors , so I took the truck and had the injectors removed and inspected by Ryan Casserly at Full Force Diesel. There were no problems with the injectors other than a couple of O rings that were replaced. I would think that this would prove that WMO is not harmful to the fuel system on a 7.3 but I'm sure there are still some who refuse to believe.

[bluesman]

I have no idea how many gallons of WMO I have filtered over the last few years w/no prob. For me it filters best when pre-mixed to whatever ratio you run. I also gravity filter. Many hundreds of $ saved in fuel. I get it in 16 gallon containers from a couple of small mechanic/oil change shops. And yeah it'll smoke.