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I've got 5000-6000 miles on various blends of WVO and solvent thinners such as kerosene, ULSD, RUG, naptha, acetone, and PGT. I do notice a slight loss in power as well as fuel economy. I notice it when I run the tank low and put a few gallons of ULSD in, I feel an increase in power and faster passing at freeway speeds, around town it's hard to notice. My van runs noticeably quieter on WVO blends. Like others have mentioned I don't mind the slight loss in power given the huge cost advantages. I run as high as 90/10 in warm weather. It's colder now so I'm running 67/23/10 WVO/kero/RUG and using my block heater if the van is dead cold, more than 8 hours. I've got a couple of bad glow plugs though so the block heater would likely not be needed if they were working.
The downside to WVO for me has been sort of an upside, it's cleaned a lot of gunk out of my tank and lines which has resulted in lift pump and filter trouble. Lately though my on board filters have been spotless. I'm using the John Galt upflow settling method and a 2 micron filter. I pass the HPT with zero bubbles. I pumped the bottom ten gallons out of my upflow drum the other day and got water, sendiment, and fats. I can get up to 10 gallons a day through it but prefer to do 5 per day. I stockpile cleaned oil for blending. My fresh oil only sits for a week before upflow settling.
BTW I've found that PGT (pure gum turpentine) helps bring some power back, it's supposed to increase the cetane rating and acetone dissolves any fatty acids that get past my settling and filtration, I use both at 1% or less, typically 1 quart of each for a 30 gallon batch. I also run my own used motor oil and trans fluid.
Someday I'd like to build a still of some sort and clean up the solvent waste from work for use as a thinner. We wind up with about 30-50 gallons a month of a mix of MEK, toluene, NMP, and naptha. The company would be glad to give it to me rather than pay to get rid of it.
As an aside we had an OTR trucker in yesterday with a homebuilt hydrogen generator on is rig. It's a modified Volvo putting out around 800hp according to him. He said he gets 9mpg with the generator and 6 without. His belief was that the hydrogen causes the diesel to burn more completely and thus increase power and economy. It was simple enough I'd like to build my own.
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1986 F350 Crew Cab 2wd SRW. 1991 7.3 IDI, T-19 4spd Sterling 10.25 3.55, 12" HD clutch. A Banks waste gated turbo. 5" cut down Peterbilt stack. Midwest rebuilt IP turned up. AC Delco 6.5 GM 12V GP's, working great. Running W85 high performance zero-gel diesel! D60 front conversion, 4wd conversion, dually conversion, and steel flatbed conversion now underway. Man those frame rivets are a pain!
1966 Porsche 911. 1983 911 SC engine with modified Zenith carbs, headers, 911S brakes, custom fuel rails, MSD 6al box with timing computer, 1974 IROC body kit. 1850lbs, 200rwhp, total blast to drive.
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