this is a fairly popular subject on the one cummins form that i'm memeber on so i was wondering if anybody in here was waste (engine) oil in their GM diesels? some of them guys with their B series cummins run a 50% mix or more with no problems (they just go through fuel filters a bit faster if they don't filter the stuff before they pour it in the tank) i'm thinkin bout runnin say a 10 or 15% mix in my 350 olds once i get it up and going i have two fuel filters, first is fuel filter/water seperator (12 microns) and second is just fuel filter (5 microns) (and i'm gona filter before hand)

Nate

if i didn't have tons of veg oil right now i would definitely be burning motor oil. I have over 100 gallons of it, plus a friend with another 100 gallons he will give me, plus i was talking to a mechanic today who has over 600 gallons of it because he regular collection guy hasn't shown up in a while and he only wants .50/gallon for it which is nothing compared to #2 at the pump. In fact i would buy it all if i had time to deal with it and room to store it but i don't.

On the 7.3 IDI forum i read a story about a guy from Norway or Finland (can't remember) who has run a 7.3 idi since new for over 300K miles on 90% wmo/10% gas - and that is in a cold climate! Gas will thin it out much better than diesel but you just have to be careful not to use too much.
Try a blend like that in a small can and see how thin it comes out. Also, i would stongly suggest filtering it before dumping it in your tank.

Also, i have heard running wmo under heavy loads can boost egt's signficantly since it has more btu's so be careful.

Paul

When I finally get ahold of a real, medium duty industrial diesel engine like a 4bta, I'll try it.

When I finally get ahold of a real, medium duty industrial diesel engine like a 4bta, I'll try it.


the 6.2 is as good for waste oils as anything - and possibly even better than a direct injected engine like the cummins because indirect injected engines are more tolerant of thicker fuels. Although some of the cummins 4bt's have the in-line P-pumps (which are the ultimate injection pumps for waste oil) you are going to spend some serious money to get one of those.

i suggest you take that bus to a mechanic just to get that stripped valve cover bolt off, then drive it home, open the vavle cover and tell us what you find. AFter that it should be a short time before you are back on the road.

Paul

the 6.2 is as good for waste oils as anything - and possibly even better than a direct injected engine like the cummins because indirect injected engines are more tolerant of thicker fuels. Although some of the cummins 4bt's have the in-line P-pumps (which are the ultimate injection pumps for waste oil) you are going to spend some serious money to get one of those.

i suggest you take that bus to a mechanic just to get that stripped valve cover bolt off, then drive it home, open the vavle cover and tell us what you find. AFter that it should be a short time before you are back on the road.

Paul

Oh, I've already made an appointment. Something in my shadetree mechanic's psyche just rebels at the notion, but sometimes you just gotta know when. If I can salvage it, I can sell it, and be on my way to a Cummins. Someday. Those are real pricey, people who have them know what they are worth. It's not like junkyards are chock full of marginally good ones, like they are full of Chevy diesels.

Yes, the inline pump on some 4bt motors...that's what I want. There are other issues besides viscosity...and the Stanadyne DB2 isn't all that great of a pump anyway...among them higher operating/exhaust temps. I don't want to do anything crazy with that to stress the already fragile 6.2L.

Here is an most excellent thread on used motor and tranny oils as fuel, pulled from the 4bt forum:

http://www.4btswaps.com/forum/showthread.php?t=1200

The 6.2 is surprisingly durable. I have to be honest, the pump is the limiting factor in durability in my opinion. I think if you could put an inline pump on one you'd be set...

Be careful in using waste vegetable oil.The DB2 injection pumps used on these GM diesels are pretty sensitive.Waste vegetable oil can cause rotor seizure.I've seen pictures of pumps with seized rotor and hydraulic heads because of it.

When I change the fuel filter on my 81 VW diesel I use a new bottle of Dexron ATF for a clean priming fill. Runs great on it straight. Filtered to 10 microns and cut with diesel I would think this would be a reasonable fuel.

The original 28 yr old 300K Bosch VE pump on my winter Rabbit may be a bit tougher than my GMC pump. I'm on my second Stanadyne DS4 hand grenade with just 9 yrs and 100K on my GMC.

okay the key to this is filtering... do it or pay the price...
test goat is my 6.9 (6.2 burb still in pieces) oil goes into a 55 gallon drum poured through a piece of material which is attached to top of barrel pour 20 gallons of oil then 20 gallons of diesel gallon of gas 20oz bottle of 2 cycle oil.. then filtered through a truck spin on filter 10 micros... a in line filter (5 micros?) then a house water filter 1.0 micron pump it in my truck... you can play with mixtures all depends on your truck mine will run on 90 wmo/10 diesle but you have to have a big supply of oil when you drive 110 miles a day at 15 mpg...
if you do not filter you will get problems of water and other crap in the oil you would not belive what the clothe sheet catches... ps I also have magnets in the bottom of my barrel...

hey guys, this is a little off subject, but , I have a oil furnace that burns #2 diesel. how would used motor oil and atf work in it ?:rolleyes:

hey guys, this is a little off subject, but , I have a oil furnace that burns #2 diesel. how would used motor oil and atf work in it ?:rolleyes:

Hi OT the answer is YYYYYYEEEEEESSSSSSSSSSSS. :D

Give it a try you will love it . 30-50% mix it is a great way to heat your house and decrease your overseas expenses . Even WVO work to heat your house but that too much ot;)

Ed

There was a article in farm show magazine a while back about a co. that makes a processing system for drain oil to burn in diesels. They said you could run as much as 80% drain oil in any brand pickup diesel engine. They had 3 different models of the filter set-up. The co. was in georgia. I'll have to look for the article. I know I saved it because i'm thinking of buying it because I have over 300 gal.

thank you, off to the filters:D

i have been running wmo for a long time now on my 6.2 n/a .free fuel what could be better? no problems just filter filter filter and dont let the highway patrol dip it or you could face a fat fine

i have been running wmo for a long time now on my 6.2 n/a .free fuel what could be better? no problems just filter filter filter and dont let the highway patrol dip it or you could face a fat fine
depends on your mix.... as long as your added oil to your fuel as a supplement they can't say much (unless smoke is bad) I haven't read any where what % make oil a additive and what make oil a untaxed fuel...

Can you run WMO and go back and forth from pump to occasional WMO? Very interesting, I have learned so much from this website!!! THANKS

Can you run WMO and go back and forth from pump to occasional WMO? Very interesting, I have learned so much from this website!!! THANKS

yes no probleme .

Ed

Where can we find out mixtures and proper filter setup? What kind of effects will it have on any component longevity? I thought I read a forum thread about a company that has a setup on here but I can't find the thread now. This seems to be a better option than WVO am I correct with that if it only needs to be filtered. I will look for that guy that ran 90%WMO 10% gas in a powerstroke. What do you think would be a reliable setup for our 6.2's with all aspects covered. Filtering, mixtures without hurting the pump and options for a light daily driver vs a towing setup if it changes EGTs and such. It makes me think I have wasted all of those quarts of used oil over the years now! arg!

This seems to be a better option than WVO am I correct with that if it only needs to be filtered. I will look for that guy that ran 90%WMO 10% gas in a powerstroke. !


The WVO reduce the bad emmision by +80% but the waist engine oil increase the -:tthat come out at the tailpipe .

but the trade off is free fuel.in the summer i use the oil out of the busses i service.it is a good mix of oil and fuel filter dumpings some gas but verry little .it smokes but it smokes the same on diesel fuel i have used hydrolic oil ilike it the best.

Where can we find out mixtures and proper filter setup? What kind of effects will it have on any component longevity? I thought I read a forum thread about a company that has a setup on here but I can't find the thread now. This seems to be a better option than WVO am I correct with that if it only needs to be filtered. I will look for that guy that ran 90%WMO 10% gas in a powerstroke. What do you think would be a reliable setup for our 6.2's with all aspects covered. Filtering, mixtures without hurting the pump and options for a light daily driver vs a towing setup if it changes EGTs and such. It makes me think I have wasted all of those quarts of used oil over the years now! arg! there is no set mixture% the rule is start at 50/50 and work your way up... my truck will run on 90 wmo and 10 diesel...buttt I start on regular diesel and shut down on regular diesel...

1st thing before burning wmo.... Put a cheap $2.00 inline filter before your factory filter...
why unless you owned the truck from new it probably has algie in the tank as soon as I started using wmo the algie started breaking up I went through about 12 of them $2 filters (fram p2) before my tank got cleaned out much cheeper than the spin on filters (6.9 diesel) or your box filter... look at post #9 on here I explained my set up a little bit I can go into more detail if needed... maybe even pics