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Biodiesel

RI Chevy Silveradoman

RI Chevy Silveradoman

At your service
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Location
Rhode Island
I recently did a complete fill-up (24 gallons) with B99 from a very reputable Biodiesel maker here in RI. (Newport Biodiesel) All I can say is WOW, what a difference. The motor ran much quieter, like a gasser for a week and a half. I then had 5 gallons in a plastic tank that I used and filled up with straight #2 diesel, and the truck still ran good. I am impressed with B99. Definitely quiets the injectors, and lubricates everything much better. In looking at the bio-fuel, it is much darker in color, than #2 diesel.
 
Jeff, do you think you will now need to change the fuel filter(s) since the bio is known to really clean up the fuel system?
 
Hey man my 1975 Mercedes runs on a 80% veggie wvo blend and its GREAT! Gonna switch the 1991 GMC 6.2 3500 dually I just bought to a wvo blend, hopefully with this forums advice and help! Its different from the Mercedes.
 
We run B100 in both our burbs from about April/May to Oct/Nov. (I work at NY's only ASTM certified biodiesel plant)

An interesting thing about the color of Bio, it can vary!! I have seen it range from almost the color of water, to the color of a dark maple syrup. It depends on the feedstock and methods used to produce it.

I see lots of jabs about having to change your fuel filter sooner, but to anyone who asks me, I remind them that truthfully NO diesel owner should be driving around without a spare filter... :)

When I started running my 95 on the bio, it had probably 230k on the truck at that point. I went 3 months on the first filter... I have seen other people go longer, others shorter...

I hope you enjoy running it, I sure enjoy mowing my lawn with bio :)
 
CtChevy427 said:
Jeff, do you think you will now need to change the fuel filter(s) since the bio is known to really clean up the fuel system?
Click to expand...

I do Bill. I plan on changing it as soon as I finish this tank. I planned it. I wanted to run a full tank of bio through the system to "clean" anything that needed to be cleaned, hoping that the filter would catch anything that broke down during the solvent process. When I do change it, I will cut the filter open and post photos. I only change fuel filters once yearly in the summer. It has worked for me for a few years since I upgraded all of my filters. I run the Cat 2 micron high efficiency fuel filters at both the tank and up front in place of the OEM filter.
 
Hello, I only change the prefilter, looks like a lawn mower clear plastic filter every 4-6 months on the Mercedes and once the crud was cleaned out i havent changed the spin on but every 6-8 monts and its a tiny lil thing! LOL What is the number on ur cat 2 micron filter? What are the threads and pitch? Thanks.
 
Your 2006 doesn't have the issues the DPF system has with biodiesel.

That said I found a 10% decrease in mpg and some power loss. I used the 10% MPG loss to see what fuel was cheaper to run each week as the B99 tended to be 10 cents a gal lower than diesel at times. As I can get the B99 delivered it is way cheaper by 30 cents than the local fuel prices here - 30 min downtown and #2 is about the same price or 10 cents higher than B99. I calculated from the MPG the truck got 9.5 MPG going 550 miles at #2 diesel price and then 8.5 MPG going 550 miles at B99 price. ($3.89 LSD #2 at my favorite truck stop high speed pump, #2 ULSD $3.65 cheapest price in Phoenix, #2 ULSD over $4.00 gal in my neck of the woods, $3.69 B99 Biodiesel.) So B99 would cost me $238.76, 64.7 gal, to go 550 miles. Cheapest #2 $3.65 gal would cost $211.31, 57.89 Gal for 550 miles. $225.21 for the $3.85 diesel. $231. at $3.99 a gal like it is where I live. As you can see I would wind up paying a convenience to run B99 as it is more expensive to go 550 miles with the MPG loss while towing.

I find the MPG and power is loss because the BTU content is slightly lower and the Duramax does not retard the timing during an extended pull where the IAT and other temperatures cut down the ignition delay. I had more knock on a high load hill with B99 than #2 when everything got heat soaked.

I ran 1300 gal in 2009 through my 2008 and had the crankcase oil level rise several quarts due to postinjection DPF cleanings.

You want to store the B99 fuel capped as it will suck water out of the air.
 
I did notice some power loss, and observed less fuel mileage. I am sure that #2 diesel would be better for all the reasons you mentioned. I only ran the Bio to see how it would run in the truck, and to clean out anything that had built up in the fuel system.

I run the CAT 1R0749. Don't hold me to it, but I think the thread pitch is 1-14. That is from memory.
 
I run B99 in my rigs because it is the only alternative fuel available that the infrastructure is in place for now. It is also better than LSD or ULSD in my worn pumps. Newer ULSD compliant stuff can still benefit from it.

But as far as cost - even when it is cheaper per gal the 10% MPG loss costs you a little more than the more expensive #2.
 
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