ULSD and SVO? - PeachParts Mercedes-Benz Forum

badtrukrisin · #1 09-11-2006, 12:37 PM

I am not getting paranoid about this but how much SVO could I add to each fillup of dino? Would 1 gal to a 17 gal ratio hurt anything? Just concerned about lube quality. I usually use Power Service Diesel Kleen but not really for this reason. Would coking of the nozzles be a problem? Right now it is a little higher than pump diesel but not much. Will I have filter problems after the first tank? Will it clean like bio? Whatta ya think?

Bud

firemediceric · #2 09-11-2006, 01:54 PM

If I understand your question correctly, you are asking how much SVO to add to overcome the lack of lubrication from ULSD.

You can get away with straight kerosene, which has almost no lubricant properties, so long as you add as little as 2% SVO. I imagine the same would hold true with the ULSD. At only 2%, I don't think you run any of the risks normally associated with SVO / WVO

Old300D · #3 09-11-2006, 02:08 PM

VO does not have the solvent properties of biodiesel.

badtrukrisin · #4 09-11-2006, 05:01 PM

Yeah, that was my question, how much is needed to do the proper lube on IP and internals. If you know, how high of ratio could one go before running into the problems? Reason for asking this is if the price of diesel goes over $3 gal then could I, say run a 50-50 mix without doing all the heating of the VO? I live in the deep South so temps are not that big of concern. TIA

Bud

firemediceric · #5 09-11-2006, 05:12 PM

Where are you at? I'm in Central Florida. I run blended WVO in my '99 F-350 and '81 300 SD, both with no modifications. It has worked for me, so far, but there are many that will tell you I'm slowly destroying the vehicles.

I blend anywhere from 20% - 40% K-1 with the WVO along with 5% RUG and some cetane booster.

badtrukrisin · #6 09-11-2006, 05:17 PM

I live about 15 mi North of Biloxi Ms. So you add RUG and a cetane booster? Does that bring it up to standard cetane? What does it end up costwise? I know you are using WVO and I may do that later but am just interested in SVO mixture right now. Thanks.

Bud

firemediceric · #7 09-11-2006, 06:47 PM

I can blend my fuel for about 75 cents to a little over a dollar, depending on how much K-1 I use.
The Cetane booster is not only to raise the cetane level, but also to help keep the injectors clean, or so I hope.

The big thing I look at is the viscosity compared to diesel. The K-1 and the RUG really helps make it right, for me anyway.

#8 09-11-2006, 08:18 PM

I run 75% wvo to 25% diesel car and truck love it and so do I the cost to me is less than a $1 per gallon

firemediceric · #9 09-11-2006, 11:17 PM

Nissan Diesel,
What part of the country are you in, how do you process your WVO, and are there any modifications to your vehicles?

#10 09-12-2006, 07:33 AM

I pick up the Wvo at the catfish house this is oil that has just been removed so no water in it. Take it home and i have 2 30gal drums
I start by filtering it thru a 25 mic filter then it is pumped to the other
drum where it goes thru a 5 micron filter I then mix in my diesel
and some cetain boost. I then pump it to a 55 gal drum and from there
in my tank. I mix approx 40 gal of oil to 10 gal of diesel.

In my Nissan Truck I have replaced both filter one time.
In Benz I just bought it so I replaced both filters just to be on the safe side. On 2006 Vw Jetta I have not replaced filters yet.
Hope this helps you out.

I live in Arkansas this is south central UNITED STATES

WD8CDH · #11 09-12-2006, 10:48 AM

You really should check for water even if the oil comes right out of the fryer. I have seen a lot of microscopic water in oil that was drained at over 225 degrees. I suspect that it must have come from the food, possably more from frozen food.

Lostyankee · #12 09-12-2006, 11:47 AM

I have not done an autopsy but in reading everything I can find for several years, the issue is droplets of oil hitting the cylinder wall oposite the nozzle. IMHO, this is a viscosity & spray pattern issue. Adding WVO to diesel yields a fuel still 'thicker' than diesel.
Try cutting filteres, dewatered WVO with regular unleaded gass, up to 25% (?). I have used up to 20% with good results in a 300SD 617 engine.
I believe if more WVO folk weighed a two samples of their processed oil and compared the weight after heating one to 225*f, they would ba amazed at the water still in their oil.
Free Fattty Acids in the used oil hold water. Without converting these FFAs to biodiesel, you will have some water even filtering to 1 micron (proven in my tests). You need an acruate scale reasing to 0.01 gram to do this. To properly doa fry pan test, you should heat dry the fry pan first. Normal home humidity will add some water to an unheated pan.
In the real world, this is getting anal. I know some folk you just settle their oil and have done so for years. Other folk heat to remove water.
I believe the variability of source WVO makes comparisions of one system to another moot ... My collected ooil may have less water than yours.
So the maoral of the story is to collect the very best oil you can find to reduce the work making it into good fuel. If your collecting cubies, never uses every drop of crud & water in the bottom. If pumping from a dumpster, never pump for the bottom. Avoid dark oil. It has been over heated & or is full of suspended crud (FFAs holding water).
I recommend doing a 0-60 MPH test with several blends and when you find a blend that wroks for you, use it with modifications for weather. In my case, I don't even try to drive my MB with WVO in -10*F weather, it just costs too much to make this work and the payback would be something like 10 years.
If you can not gaurentee your oil has zero water, add a biocide as insurance against the dreaded black goo, algae.
"this oil has just been removed (from fryer) and has no water in it" is wishfull thinking. Any suspended animal parts, even microscopic, is FFAs and will have some water.
Good luck.