in my research i read about a guy running a blend of 70% WVO with 30% dino with no modifications to his 6.2 suburban. would this be ok to do? i understand in the colder months a heating device would be important but he was running this as a summer blend....does this work out?

Even in the summer it won't work for long. Read the great info on this site and you'll see why. In your case the 6.2 has an injection pump that won't last long on fuel with higher viscosity than diesel, and that blend is a lot thicker, especially at startup. Not a good idea.

I have been running a blend in my 6.2 for about 4,000 miles now without any problems. I am using about 70%WVO/30% diesel. It starts and runs normally, no smoke and instant starting. I plan to add rug to my blend as the weather gets cooler but am going to keep it no more than about 20%, the rest I will blend with diesel or kerosene. I also have coolant heated fuel lines and a filter but they don't help on start-up.
From what I understand, it is not the viscosity of the fuel that damages the pump (although I wouldn't try starting on straight wvo cold)but the quality of the fuel and shocking the pump in 2 tank systems. I did a little experimenting with blends before I actually started using them and found that a 75wvo/25rug at 50º is very close to the viscosity of diesel at 20º. I am assuming the engineers designed the IP to handle all extremes so if the IP can handle 20º (or even colder I assume) diesel then a blend shouldn't be too thick.
Rusty

so rusty i really shouldn't have any problems if i were to run that kind of blend given that i do the saem modifications you previously listed? and by blending do u mean your just pouring them into the tank in correct proportions?

Usually I mix them in my centrifuge tank and then pump it into my vehicle but I have on occasion put WVO in my tank with some diesel. We have a really bumpy,winding road near our house so I always drive a mile or two on that road to mix. I can hear the fuel sloshing around in my big tank so I assume it is mixing well.
Rusty

so in your opinion this would be a safe blend to try and to run year round?

Where are you running it? What area of the US, or world?

haha i live in Buffalo, NY you know with all the snow so it can get cold here but not way below freezing. i dont know what to do and i really want to avoid a two tank system at all costs

Well, you should be able to mix 50-50 most of the time, 75%VO in the summer and 25-30% in the winter (below freezing). John Galt runs 20% all the time, I believe, and he's in Alaska. Probably usually colder than your area.

well thank you that was very helpful and convincing i think im going to try it

Juast be aware that blending is the riskiest way to use WVO in your engine...if you are OK with the risk, then go for it. PLEASE do more research, and carry extra fuel filters and know how to change them...

can u please shed some light on why its the riskiest way to run WVO? i thought i might have this down by now your statement kind of scared me off could you elaborate a little?

If all the water and high melt point fats are not removed from the used VO to make a VO-diesel blend, then it can cause engine damage.
Read the blending section of this forum to learn more.
http://biodiesel.infopop.cc/eve/forums/a/frm/f/9751014871
and here for some specific GM problems with VO.
http://www.burnveg.com/forum/viewtopic.php?t=119&postda...ostorder=asc&start=0

I jumped in quickly and said it wasn't a good idea, which is probably not fair since I'm less experienced than most on this forum. So, I thought I'd explain my comment.

From my reading, my Stanadyne injection pump in my 6.5 will not hold up long if fed fuel with higher viscosity than diesel. That's why I went with the 2 tank system, I'm going to feed it clean, dry oil heated to reduce viscosity.

My fear on blending, particularly with high % of wvo, is that depending on the wvo you have you may still be sending fuel with higher viscosity to the IP. To me its a bit risky.

I may be wrong, and wanted to elaborate to admit that! I'm here to learn so I'm open to hearing other points of view.

I would like to hear also why it is the riskiest way to run WVO? I think the key to any system is to make sure you have clean dry fuel. As I said, I clean mine twice, first through upflow settling tank then into a centrifuge, it comes out looking like I could cook with it again! With that said, I live in a part of the country with pretty mild winters, I am not sure how a blend would work in cold weather, it might have to be biased so much towards dino fuels it might not be worth it but I have read people blend in really cold weather with good results so you might talk to some of them, I haven't gone through a winter yet but I think in my climate I should be ok with a 70wvo/20kero/10rug blend assuming I don't get into vapor lock problems with my heated system.
I am not sure my heated system really helps, just makes me feel better but I will say it runs really well on the blends.
I would try starting off at maybe 50/50 and see how it goes, if you start getting smoke on start-up lessen the WVO, if it starts well maybe increase the WVO.
Good luck, let me know what works so I will know what to do this winter.
Rusty

thanks for all your help guys i think with all your input i can effectively figure this out! by the way im only 16 and the only one of my friends that has a clue about any of this which is pretty rad. im currently driving a crown vic police interceptor but im trading to to a guy for a 1991 burb with the 6.2 in it! thanks again