I wouldnt run it in the PowerStroke. The injectors are oil fired. Biodiesel that ends up in the crankcase from normal blowby can cause the popet valve of the injector to stick. Ford studies have proven 5% to be ok, anything more would not be warantied(if that matters) and you would be making your own experiment. Good luck.
Dieseling on grease
- Thread starter rdbigfarmboy
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Corm
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- Fairfax, Franklin County, Vermont
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- 1999 Cub Cadet 7260, 1953 Farmall Super A
I helped a buddy of mine intall a kit from greasecar.com onto a VW Beetle diesel. The fellow we did it for loves it. The kit includes a tank that goes in the trunk where the spare tire used to go, water hoses to go to the back tank so the engine can warm the grease tank, and a valve that allows the driver to switch from the diesel tank to the grease tank. We spent one day installing the kit. The owner says that during the summer he runs pretty much pure grease with no problem. Last winter he started his car on diesel, and once his grease tank warmed up, he'd then switch to grease. He would also purge his injectors of grease using pure diesel before he shut it down. He gets his grease free from a couple of local restaurants who are very happy to give it away.
Corm
Corm
Boomerang1
Gold Member
Has anyone ever tested the ph of used oil? It will probably test very acidic. The fatty acids will coke up the inside of your engine and injectors. Diesel fuel has a chain of around 11-13 carbons. Used vegetable oil around 32 carbons. Used oil needs to be processed with lye and methanol before using. The bi-product is glycerin which is soap. Biodiesel will also eventually ruin rubber components in the fuel system if it is run straight for a month or more. Use 20% diesel fuel. People who run their engines on straight biodiesel should expect some expensive repair bills in the future. Also when making biodiesel, you have to use vegetable oil and not animal fat.
LBrown59
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Someboby was telling thay run used Hydro Oil mixed half with diesel
Boomerang1
Gold Member
I drove truck for a guy that, every time he changed the oil in his semi tractors, would filter the used oil and pour it in the fuel tanks of that truck . That's about 10 gallons of used oil to 300 gallons of diesel. I put 200,000 miles on one of his new trucks before leaving his company. Every once in a while one of the injectors would get plugged. He changed oil every 15,000 miles which would equal 130 gallons of oil run through the engine. I myself would not take the chance of something bad happening.
LBrown59
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The way I look at it <font color="red"> if it's to dirty for the oil pan it's to dirty for the fuel tank. </font>
SailorBob
Gold Member
Has anyone thought about the fact that used grease or oil from resturants probably is full of salt? Think about fried chicken and such foods are salted before cooking. I would think that the salt would be very bad for an engine. Is there any way of removing it?
OP
rdbigfarmboy
Gold Member
I almost feel guilty to admit I filter and burn used motor oil usually in the 5% range. Its whatever goes in the drum usually 10w30 or 15w40 and occasionally ATF. I filter pretty well and add it to the used cooking oil (grease untreated). Trucking fleets have done so for years and havent had a lot of trouble. Burned used engine oil mixed with diesel.
My 89 F350 might be worth $3500 on a good day and the Chinese tractor cost $7000 new from Rural King. So my financial risk are not so great and I am getting a return on effort.
The only warning is before you burn bio or grease check to see how your distributor pump is lubricated. Is it from the engine oil pump, a seperate oil reservor, or by piston blowby from the fuel delivery piston. If from fuel delivery piston meaning diesel is lubricating the pump then straight bio or oil may not be a good idea.
If you dont know ask a pump repair shop. Most Lucas and CAV on smaller tractors lube this way.
My 89 F350 might be worth $3500 on a good day and the Chinese tractor cost $7000 new from Rural King. So my financial risk are not so great and I am getting a return on effort.
The only warning is before you burn bio or grease check to see how your distributor pump is lubricated. Is it from the engine oil pump, a seperate oil reservor, or by piston blowby from the fuel delivery piston. If from fuel delivery piston meaning diesel is lubricating the pump then straight bio or oil may not be a good idea.
If you dont know ask a pump repair shop. Most Lucas and CAV on smaller tractors lube this way.
RobertN
Super Member
I think this is great. I was wondering though... What do you do with the leftover? What kind of stuff is left after you filter, and how is that gunk disposed of?
