Attn WVOers:What ratio WVO to Diesel are you using on a one-tank system? - Page 2 - PeachParts Mercedes-Benz Forum

bill murrow · #16 08-23-2005, 08:14 PM

So far as WVO goes I have been only a reader. But I did talk at great length to another forum member and he says to never mix diesel with WVO/RUG and to install another tank for the sole purpose of burning WVO.

With this method he says you must purge your fuel lines with diesel before shutting it off. Run the straight diesel for 5 minutes or so before shutting it off.

He also told me another rather important thing. Carry extra fuel filters and the tools necessary to change them. I would think that with the 2 tank system clogged fuel filters would be less of a concern as the lines you are using to run the WVO through would be free of any wax buildup.

I'm going to be jumping onto the WVO band wagon real soon. Prices are way out of line plus I've got a beater to try it on first.

Cheers,

Bill

coachgeo · #17 08-23-2005, 08:45 PM

Quote:

Originally Posted by bill murrow

So far as WVO goes I have been only a reader. But I did talk at great length to another forum member ....Cheers,

Bill

Well, I am sure this member is very knowledgable but second opinions are allways valuable. There is a larger and larger following to the blend idea. Will just have to see how it pans out.

bill murrow · #18 08-23-2005, 08:54 PM

Quote:

Originally Posted by coachgeo

Well, I am sure this member is very knowledgable but second opinions are allways valuable. There is a larger and larger following to the blend idea. Will just have to see how it pans out.

Sure second opinions are valuable. Thats why I'm still a reader.

Trying to figure the best way.

Cheers,

Bill

Smooooth · #19 08-23-2005, 10:43 PM

I am currently running a 25%-30% WVO blend (30% WVO / 70% Diesel).

Shortly we will be installing a Frybrid kit - SWMBO says now is the time.....

The blend has been working out great during the summer months. I have yet to see temps. below 50F yet. Car still runs great................

My thoughts:

1. Two Tank sytem - always performs the same - set and forget(except to purge).

2. Blends - changes as do the seasons, albiet less expensive.

While runnings blends (and I assume two tanks systems) you MUST do a few Wide Open Throttle (WOT) runs to keep things cleaned out - aka Italian Tune-Ups.

ROI for a Two Tank System seems to run between 6 and 12 months depending on what you purchase and what your MPG is. Not a bad ROI based on other energy techologies such as Solar for residential use.

Stephen

davidhoward · #20 08-23-2005, 11:42 PM

Here's more info than most would care for on vegatable oil for fuels.
Note that they studied 25% VO + 75% diesel and it works fine but maybe has some long term issues with direct injection systems...

http://www.pages.drexel.edu/~ajl23/SuperCritical03.pdf

Matt SD300 · #21 08-24-2005, 12:00 AM

I have gone 7,800 miles on 20/80 blend of RUG/WVO

With no problems!!!!!!!!!!!!!! MY point is it WORKS GREAT..nuff said

Blending with diesel could turn into a NIGHTMARE.

Read any diesel owners manual, and it WILL talk about the wax problem with diesel in cold weather. Well the veggie oil likes to pull the WAX out of diesel

Some diesel fuel has more wax than others...Its a crap shoot!!!!!!!!! I did a test and the WAX dropped out in 5 weeks

If you want a blend that works try 20/80 ..RUG/+High Grade WVO + 2 oz. of Cetane Boost per 5 gal of blend. Safe stuff wont even lite with a match.

My Mercedes & Dodge Cummins are running on 20/80 RUG/WVO blend.

Savings so far by using the blend about $1000.00

TonyFromWestOz · #22 08-24-2005, 11:07 AM

My wife does not want to switch fuels, so I fill her tank with a 75:25 sumer or 50:50 winter blend of Used Cooking Oil (UCO) and biodiesel (B100), so I suppose that could be B75/UCO25 in summer.
I have also added a coolant/fuel heat exchanger and an additional in-line prefilter (cheap $1 chinese filter) before the stock prefilter.

If the car gets a little hard to start, my wife lets me know and I adjust the blend accordingly.

~15 000km with no problems other than a inter injector return line leak and initially frequent prefilter blockages as the diesel gunk was cleaned out.

My UCO is "cold filtered" to remove any high Melting Point oils which could cause issues in the main fuel filter.

davidhoward · #23 08-24-2005, 01:09 PM

Quote:

Originally Posted by TonyFromWestOz

My UCO is "cold filtered" to remove any high Melting Point oils which could cause issues in the main fuel filter.

ditto.

B.T.W. it takes a while to run through the filter so be patient

MattBelliveau · #24 08-24-2005, 01:17 PM

I just want to let everyone know how much I appreciate all the input that I'm recieving. You guys are great, and to everyone else: keep the info coming!

Austin85 · #25 08-25-2005, 12:09 AM

Matt;
Thanks again...for advice & setting me up in the right direction!

Running great so far close to 800 miles on blend....I'm on my 3rd primary filter today; but using Bioguard to kill of bacteria/fungus in the tank....
so that should stop soon....

Pumped in about 12 gallons toady for $4.00...........

Matt SD300 · #26 08-25-2005, 01:00 AM

Hi Austin,

Your very welcome

Once you get all the funk out of your tank..........

It will be SMOOOTH sail'in

Im glad I could help!!!

stockdad · #27 08-25-2005, 09:30 AM

[QUOTE=TonyFromWestOz]My wife does not want to switch fuels, so I fill her tank with a 75:25 sumer or 50:50 winter blend of Used Cooking Oil (UCO) and biodiesel (B100), so I suppose that could be B75/UCO25 in summer.
I have also added a coolant/fuel heat exchanger and an additional in-line prefilter (cheap $1 chinese filter) before the stock prefilter.QUOTE]

Hey Tony!
So, you're actually blending with b100 and WVO (or 'UCO' as you say)?
What type/brand of coolant/fuel heat exchanger do you use? Can you use a RUG/WVO blend with that type or is the heat too much for the RUG?
Thanks.

Triffin · #28 08-25-2005, 10:09 AM

Matt 300SD

Ran across this link when researching WVO blends
Has anyone tried this product ??
Are they doing anything that acetone + a
cetane booster wouldn't provide ??

http://www.dieselsecret.com/index.htm

Triff ..

stockdad · #29 08-25-2005, 10:43 AM

Quote:

Originally Posted by Triffin

Matt 300SD

Ran across this link when researching WVO blends
Has anyone tried this product ??
Are they doing anything that acetone + a
cetane booster wouldn't provide ??

http://www.dieselsecret.com/index.htm

Triff ..

Much discussion has been made of this so-called 'secret'. Check here for the facts.

TonyFromWestOz · #30 08-25-2005, 11:10 AM

Stockdad,
"Hey Tony!
So, you're actually blending with b100 and WVO (or 'UCO' as you say)?
What type/brand of coolant/fuel heat exchanger do you use? Can you use a RUG/WVO blend with that type or is the heat too much for the RUG?
Thanks."
The coolant/fuel heat exchanger on SWMBO's 300D is a couple of pieces of copper pipe, brazed into a coolant/ fuel heat exchanger, which takes coolant from the heater outlet pipe, near the oil filter (careful not to obstruct the filter replacement) and returns it to the heater coolant pipe returning to the water pump. If cost me a few beers and the copper pipes.
My heat exchanger is a more complex unit, which has 2 * 1 meter lengths of 5/16" copper pipe in a 2" diameter copper pipe, fitted with 5/8" pipes for Coolant hose connections.

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