mixing WVO with diesel

[93turbo'd_animal]

OK another newby here I am tring to learn as much as I can I've read a lot of posts so far but I haven't seen anything about just mixing the two so can you with out any problems if so do you still need to pre heat everything I know the WVO will still have to be filtered before use and if you can just mix the two what percent can you run with out having to heat the fuel and lines kinda short on time and money so I would like to be able to just mix forawhile while I get things ready to run straightWVO [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]

[mannytranny]

Pre heat the oil if you suspect water. If you can find a good source of VO that is waterless, you should be able to skip this step.

When I was doing this, I got the nice 5g tanks for recreational vehicles, and filled with a ~50/50 mix, and stirred with a paint type mixxer. Then add to tank.

It worked great.

[Animal_Mother]

I'm going to ditto mannytranny except I'm just doing a 20% mix in my 86 idi as my supply is not what it should be. That should change soon though. I use one tank for mix and the other for a start up and purge tank. Works great and smells good too.

[svswan]

Just poured my first mix last night - 2.5 gallons of oil into the front tank that had maybe 15 gallons. Just about 20%/80% V/D (no, my truck does not have a venerial disease ;-). I figure my truck bounces around enough unloaded to mix the mixture well before I swiched over to the mixed tank. I sure didn't notice a difference. I've read of people going as far at 50/50 and even 80% veggie in warmer climets. I don't think I would go over 50/50 with out at least an inline heater to help boost temps - I do not want coking.

Any one have a bad experience just pouring oil in the tank and letting the expansion joints stir it?

Here is another thought: I hear the fuel filter is electicaly heated on the early powerstrokes, has anyone used an infrared temp gun to read the fuel tank temp after a long drive? I think I'll post this one in a new thred to get a broader response.

[93turbo'd_animal]

Ok another question do you need to purge the lines with straight diesel when just running a mix [img]/ubbthreads/images/graemlins/shrug.gif[/img]

[mannytranny]

Nope.

The idea is that the dilusion is not going to cause a problem if left alone.

Too bad injectors are hard to inspect on PSD's.

From what I have read, anyone in temps above 60* or so should be 100%++ safe with a 20/80 VO/Diesel blend.

[93turbo'd_animal]

[ QUOTE ]
From what I have read, anyone in temps above 60* or so should be 100%++ safe with a 20/80 VO/Diesel blend.

[/ QUOTE ]

Well that bites I was hoping to run at least a 25% WVO blend all winter and it can get zero when ever it feels like it sometimes [img]/ubbthreads/images/graemlins/mad.gif[/img] [img]/ubbthreads/images/graemlins/shrug.gif[/img]

[svswan]

It doesn't get that cold here, but I warm up on 100% dino just to be safe. I bet if do that you could get away with 25% veg or more. Even if you have your filter heater unpluged it still sits in the V, and the fuel rails are in the head. I'm guessing if dino injects fine at 50F and veg needs to be 170F then a 25% V/D mix would only need to be 80F to be the same vescosity as strait dino at 50F (1/4th the diff in temp since mix is 25/75 added to ambiant temp). I'm not a chemist but this sounds right - anyone know if facts in this?

[dbennett48]

I am not disagreeing with you, but chemical changes are not always linear. I am not sure you can draw the conclusion about 25% veg flowing at 80F = straight diesel at 50F. I don't know, but we will probably hear from someone who knows.

Dave [img]/ubbthreads/images/graemlins/shrug.gif[/img]

[93turbo'd_animal]

Thanks for the thoughts but I think I'm going to setup an experiment with some different temperature dino and WVO and some different mixes and use a controlled amount,sloped piece,and time how much collects at the bottom to compare viscosity between dino and the mixes at different temps and hopefully this will give me a guide to what mixes I can run at different temps [img]/ubbthreads/images/graemlins/shrug.gif[/img]

[blitzlaw]

Hey there,

I'm sure not the best guy here to weigh in on this, but viscocity is measured by units called centistokes. The measuring apparatus uses a cup with a hole of a set size in the bottom, and the time to empty the cup through the hole is measured.

If you use an existing scientific measure, you can compare the viscocity to known values without testing anything but the mixtures you want values for. Then we'll know how these mixes stack up against bio-d, petro-d, and anything else we're curious about.

Now, does anyone know where a viscocity test cup can be had on the cheap?

[93turbo'd_animal]

Yeah I figure thier ws a more scientific way of doing it but I figured this way would at least give me an accurate comparison using diesel as the set standard [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]

[rcboats1]

[ QUOTE ]
Now, does anyone know where a viscocity test cup can be had on the cheap?

[/ QUOTE ]

All you need to do is buy a metal measuring cup and drill a hole in the bottom(say..1/8th to 1/4 inch) and run your dino thru it to get your base line timing and work from that.

Kelly

[BigPigPSD]

Can we heat up the mix with a hose-on-hose to get it to be as viscous as 100% diesel. I'm running a 50/50 mix unheated for now and want to run 80/20 veg/dino and wanted to know if the heat will affect the dino portion.
Thanks Anthony

[93turbo'd_animal]

I can see no reason why the heat would affect the dino it gets pretty warm anyhow buy the time it goes thru the filter then into the heads besides I wouldn't be suprised if you couldn't run 80%WVO anyhow where you live [img]/ubbthreads/images/graemlins/rolleyes.gif[/img] [img]/ubbthreads/images/graemlins/biggrin.gif[/img] [img]/ubbthreads/images/graemlins/warmsmile.gif[/img]