Thread: WCO blend

Thanks to all for the advice.
Do preheating filters help with blends or are they not worth the hassle?
Anyone tried the cheep disposiable inline filter (the clear plastic type you get from auto parts retailers) as a easy to replace "safety " pre-filter?
I am still a little concerned with adding ULP into a diesel engine, doesn't seem right but i guess a lot of smarter people have been doing it for a long time. Anyone know what type of seals are in a 97 patrol IP?
Is the ULP just to thin the oil, or to improve combustion??
If I was aiming to use 50% oil what % of ULP to diesel?

Many thanks
Rob

If your blend will pass through the filter unheated, then why bother heating? Heating as far the filter is concerned, is to lower viscocity and achieve the same throughput as dino. Comparing viscocity of your blend to dino, will give some indication how it will be.

Folks use ulp because it is/was the cheapest thinner around. Think of it like this: you can never get dino/veg blend to be as thin as dino itself, UNLESS you use 100% dino... (or heat it).

Anyone know what type of seals are in a 97 patrol IP?

My memory says it was vehicles from around the '93 mark onward that had viton seals from factory.... and also every vehicle that got its' IP rebuilt from early 90's because of leaks from that new diesel. In the case of Jap rotary IP's, it was the throtle shaft seal. This could be replaced in situ along with top cover o-ring. Tales of needing complete IP overhaul were scaremongery.

Is the ULP just to thin the oil, or to improve combustion??

ULP is just to thin veg.

If I was aiming to use 50% oil what % of ULP to diesel?

Am not exactly sure what you're asking here. In Brisbane 50%veg/50%dino might work out ok because of the higher ambient temps?? I once used a mix of (50%veg, 5-10%ULP, 40-50%DINO). I think basically, it's a"suck it and see" situation because so much depends on your particular vehicle, ambient temps and setup.
80%veg/20%ULP is widely used by blenders. 20%ULP is often regarded as maximum.

A vacuum guage to monitor the suck at the filter and a temperature probe to monitor the injected fuel temp would be useful tools.

Hope this helps.

Hi robertjusher,

I think that if you try to use a blend of more than 25%wvo without heating the fuel you are asking for problems.

Ulp and diesel/bio is used to lower the viscosity of the blend because kero is expensive in OZ. Ulp lowers the cetane level of diesel thats why it is not blended at more than 10-15%.

Read this link,
Mixing Gasoline And Diesel

If you want to use a higher blend of wvo like David, who used to post on this forum then you should add a fphe before your filter.

Read this link,
BurnVeg.com Forums :: View topic - filters plugging while on a 50/50 blend

The other from this forum like Tony, tbird650, neil have given some great advice. I believe that if you try to push it too far with blends you will damage your engine.

It comes back to make bio if you don't want to change your car, otherwise make/or buy a two tank system.

God bless froggo.

Many thanks Froggo and Tbird650 and everyone else how has helped along the way!
I am very greatfull for the time you guys are takeing to help a newbi not trash his car!
I read all then and it seems UPL is bad!

Ok a small % blend to start with and a cav filter and HE as soon as posiable. I have be told (thanks felix) and went and brought some kero for $7.80 for 4L. So as cheep as diesel that was $1.80 tonight.... Any advantage to kero over Dino as a blending agent?

Does the HE cause any problems if a small % of oil is used (if my oil supply is low) of should I add a valve to shut it off when low oil % is used.?
Any idea what size HE ( 20 or 30 plate) will be required for a 2.8l 6 cylinder that I hope to eventually go full 2 tank system on?

Last and most important question Any one in or around Brisbane that might be able to show me their set up?

Many thanks
Rob

robertjusher

The ULP issue is always one to cause confusion even amongst experts.
The link given above: Mixing Gasoline with Diesel is correct for adding to dino but not totally applicable to veg. The reason is that dino has only borderline lubricity while veg has more, much more.
It's true that ULP will lower cetane .......and the flash point is much lower too, but it will do the task intended. I ran best part of a year on 20% blend without any IP damage. That same IP stayed in the vehicle for a further 2 years on straight veg.
At one time the Mercedes handbook actually recommended adding up to 20% (I think it was) petrol to diesel as a winterizing agent! I seriously doubt that would be the case today with the modern diesel.
Bottom line is don't add straight ULP to modern dino no matter how well meaning the advise.
Max 20%ULP in veg blends.

Whatever thinner you choose, you are doing it right by starting off with a small modest blend to start with. If that goes good, then look at increasing.

Does the HE cause any problems if a small % of oil is used ?

So long as there is some veg in the mix, this will improve the lubricity which is the main concern. Otherwise as said earlier, dino is known for its' marginal lubricity.

HI
Thanks to all for the advice along the way.
Just a quick update. I have started to find a source of oil and currently have 1 at 20l/week, not much but a start, and a lead to a chef using cottonseed oil and unhappy with his oil collecting service!
I am wait for the parts to arrive to start my conversion, any day now...
Loaded with great advice from Fitian and almost have the plan drawn in ink !
I have been blending oil filtered to 1 micron at 15% with diesel and the patrol seems to have no problem with it. I will stay at 15% untill I get my 2 tanks system running.
Again thanks to all
Rob