my truck is a 93 6.5 3/4 ton 8 lug, my question is this, if i have diesel in my tank and see a bio-diesel station can i fill my tank up with that? What if its b20? i thought these trucks cud only take b5? can someone please clarify for me, dont wanna kill my truck if i use bio diesel wrongly

I sometimes run B100 in my '95. As long as it is "good" quality fuel you shouldn't have any problems at all. Well let me quantify that... Biofuel acts as a solvent and cleans the fuel system of dirt and varnish. You'll find the fuel filter will need to be changed a month or two after running Biofuels. After the initial clean out should be good to go

so b5-20 is all good? no harm on inj pump

I don't see it harming the injection pump. I can see the newer trucks (2008+) acting up because of the DPFs... those are very sensitive on what you burn lol.

lol one thing i hate bout these newer days....emissions......

If the Bio is dry it will actually lube the IP more than Dino diesel

i run 99.9% store bought without problems.

Good quality B20 is fine with your mechanical IP - even more so that you have the secondary fuel filter. I have a similar truck and buy B20 #2 fuel 3 seasons, B5#1 for winter. If you live in a cold area, just be careful about spring or fall gelling in sudden cold snaps.

Bio fuel keeps fuel injection shops busy. Best thing since rust.

Bio fuel keeps fuel injection shops busy. Best thing since rust.

I think you should clarify "biofuels". I can't imagine biodiesel would shorten the life span of the IP by much if any. WVO on the other hand, I could see shortening the life of the IP.

To the OP. You can run any blend of biodiesel in your 6.5 and blend it with any amount of D2 in the tank. Like was mentioned, be sure to keep an eye on the fuel filter if you are running high percentage blends and biodiesel gels at a much higher temperature than D2 so you will want to run low percentage blends in the winter months (depending on where you live).

I think you should clarify "biofuels". I can't imagine biodiesel would shorten the life span of the IP by much if any. WVO on the other hand, I could see shortening the life of the IP.



Please contact any fuel injection shop and ask if bio fuels has increased their business.

Ask if Bio fuel will shorten the life span of the pump.

Then ask if they will warranty a pump that runs bio fuel through it.

Think you will be quite surprised.

I make my own in my garage. not as much work as you would think, and it seems to be better. I cant run it year round due to a gel point of like -5C and cant risk a shut down. But all summer its like B95, B100 right from a pail in garage and a can of 2 stroke. I have set up 2 extra filters (just in case) one between tank and LP, and other under the hood at the bowl. There are like 30 filters that are used from the point that it is WVO to the point it goes in the tank. and it works out to like $0.32/L or $1.28/Gal.

Well I'm a new owner of a 96 Sub but the previous owner put 100K miles on it mostly with commercial grade biodiesel, the car is stock, runs fine, everything works. I have run a tank of homemade biodiesel and it seems to operate quite well with my B100.

I will qualify that my biodiesel is filtered down to 5 micron, dewatered and tested with a home test kit, so I consider its quality to be as good or better than most D2 bought at the pump.

As for biodiesels effect on IPs, does it shorten the life, doesn't seem too. At 153K biodiesel miles on a 99 VW TDI diesel I recently had a VW computer hooked up to its extremely detailed run-time diagnostics during a test drive. With this (VAG COM) computer, without going into too much detail you can very accurately gauge the health of the Bosch injection pump and injector nozzles. Together with a seasoned VW diesel mechanic we determined that the pump and injectors were well within expected tolerances for this mileage and the mechanic actually told me he had never seen a pump that looked this good after this many miles. It actually produced numbers that are normal on a new or recently rebuilt pump.

Not sure how this will relate with my recently acquired 6.5 but I believe that most biodiesel if high quality filtered and de-watered is actually better for the IP and injection system due to its increased lubricity. Newer D2 at the pump is very dry with reduced sulphur and is actually much harsher on the fuel system. In Europe B100 is readily available at the pumps and cars like the TDIs work quite well there with these fuels. I don't see why 6.5s would be any different but I will report back as soon as I get more miles on my new to me 96 Sub on biodiesel. What I do expect is to save about 10K dollars over the next 100K miles, dollars which won't be going overseas or to Chevron or Mobil.

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96 C2500 Suburban 3/4 ton 2x4 SLT 3.73 rear end bone stock, 18mpg so far on B100, 100K miles

99 VW TDI New Beetle manual 5spd, 50mpg, 153K miles on B100 super cheap miles!

Well I'm a new owner of a 96 Sub but the previous owner put 100K miles on it mostly with commercial grade biodiesel, the car is stock, runs fine, everything works. I have run a tank of homemade biodiesel and it seems to operate quite well with my B100.

I will qualify that my biodiesel is filtered down to 5 micron, dewatered and tested with a home test kit, so I consider its quality to be as good or better than most D2 bought at the pump.

As for biodiesels effect on IPs, does it shorten the life, doesn't seem too. At 153K biodiesel miles on a 99 VW TDI diesel I recently had a VW computer hooked up to its extremely detailed run-time diagnostics during a test drive. With this (VAG COM) computer, without going into too much detail you can very accurately gauge the health of the Bosch injection pump and injector nozzles. Together with a seasoned VW diesel mechanic we determined that the pump and injectors were well within expected tolerances for this mileage and the mechanic actually told me he had never seen a pump that looked this good after this many miles. It actually produced numbers that are normal on a new or recently rebuilt pump.

Not sure how this will relate with my recently acquired 6.5 but I believe that most biodiesel if high quality filtered and de-watered is actually better for the IP and injection system due to its increased lubricity. Newer D2 at the pump is very dry with reduced sulphur and is actually much harsher on the fuel system. In Europe B100 is readily available at the pumps and cars like the TDIs work quite well there with these fuels. I don't see why 6.5s would be any different but I will report back as soon as I get more miles on my new to me 96 Sub on biodiesel. What I do expect is to save about 10K dollars over the next 100K miles, dollars which won't be going overseas or to Chevron or Mobil.


What system for brewing do you use?

Potassium or sodium hydroxide?

What water saturation or PH level during titration do you dertimine to make the WVO useless or too watered?

What is the volume you are brewing?

is there a way to get the gell temp down?

sorry bout all the questions but i've been dying to discuss this with someone that actually brews it.


And you are right... home brew is waaay better than govt if you know what you are doing

Well I'll try and answer ?s

I use a appleseed processor, I have built two, the kit from B100 Supply LLC. seems the best and its what I use currently.

I prefer to use Potassium Hydroxide but I started using Sodium. The potassium hydroxide is much easier to mix and doesn't lead to glycerin gelling up hard in your processor as Sodium does.

I can always remove the water no matter how bad the oil is but its really a question of how much time and effort I want to put into the process. The same goes for titration levels but I've been lucky and never had anything beyond 7. Good filtering and of waste oil goes far in getting the FFAs and water down to reasonable levels. Filtering is time consuming, labor intensive and messy process but essential.

I live in So Cal so gelling is not much of a problem but find that if I'm going to mountains then I buy 1/2 a tank of dino to dilute to B50. A side note we went to the mountains last spring with biodiesel in tank and it seemed to attract a lot of attention from the bears! The strong sent of cooked french fries seemed to attract them to our vehicle, next year I will dilute the tank to try and squelch the attraction.

Bottom line is if you can find a good supply of used oil thats half the battle the rest is just being careful and working with a lot of oily fluids and hazardous chemicals. If you like chemistry experiments then its for you!

Please contact any fuel injection shop and ask if bio fuels has increased their business.

Ask if Bio fuel will shorten the life span of the pump.

Then ask if they will warranty a pump that runs bio fuel through it.

Think you will be quite surprised.

Well then Minnesota IP shops should be overwhelmed with business right now because ALL pump diesel contains biodiesel.

But all summer its like B95, B100 right from a pail in garage and a can of 2 stroke.

Why are you adding in 2 stroke if you are using BIO?

why does bio shorten the life of IP's? is it bc of the cold and if its too thick it will break the pump?

Bio fuel keeps fuel injection shops busy. Best thing since rust.


I have heard similar stories and opinions, included those whose opinion I trust. I will only be running dyno and 2-stroke/additive in my 6.2l.

Why are you adding in 2 stroke if you are using BIO?

the only reason is that i add the 2 stroke once the brew is done simply to be able to tell if my cans get mixed up. I have like 20 5 gal pails and a couple of people working for me and moving stuff around. its not essential... just a color thing.

so the one day i get here and cant find any ready to go i simply pop the lid and look for blue....

I have a brewing building going up soon. more space and no more 2 stroke

why does bio shorten the life of IP's? is it bc of the cold and if its too thick it will break the pump?

because many people are making home brew and not getting all of the water out. i run b99.9 and b20 at times, all store bought, and have no problems. i've also run into many injection pump guys who say it's bad, but then when i talk with them more they realize that it's people making bad home brew. the store bought b20 is fine!