I understand your video 100% !! Everyone is getting stuck on the return lines, But to help everyone understand a little better, You could actually just block off the return lines !! I have 3 diesels with the return lines blocked off !! It hasn't changed or hurt anything in over 10 years !! Stop sweating to small stuff ! This is about as simple a system as can be built !! And it's RELIABLE !!!!!! Many other systems fail only after a few months !! This one will last forever !!

Great explanation.  I have been using Veg oil in my vehicles and boat for about 12 years.  I settle it for 6 weeks or so, then gravity feed it through a 10 micron bag filter (they are cheap and last a long time), then do pretty much the same thing as described here. The only thing I would caution is to make sure your vehicle hoses and seals are compatible with Veggie oil. Rubber is eaten in no time by the stuff. If you have rubber seals internal to the injection pump or elsewhere, you will do major damage after 6 months or so....I already did that without knowing ...the manufacturer couldn't tell me so I took a chance!). Most engines after the mid 90s apparently do have veggie compatible seals (Viton is one name for them) .  Go for it!

That was the cleanest clearest explanation of this subject I have ever seen!!! MEGGG-R!!!
Many thanks for that. You have endorsed what I believed was totally possible. Thunderbirds are GO!
It is my passion to follow in these great footsteps, with a Toyota Coaster commuter bus, and journey around Australia (my homeland... a very big space it is, lots of kilometers between towns, especially in the wild West... but, with plenty of deep friers too... we love our junk food as much as the next supposedly first world civilized nation).
I want to be able to drive anywhere I like here in the land down under, becoming a seasonal grey nomad... doing the hot north in the winter and the cooler south in summer... including Tasmania... and all for free... (well almost for free), expending only the effort of gathering and filtering the used cotton seed oil*.
* Very good type of oil for use in Diesel engines, by the way for those who did not know that. Very low in trans fats, which makes it thinner. That's why it is so good for deep frying fish and chips. Easier on the human heart in a longer term sense as well.



Again I say, many thanks for sharing. Love your work!!

Great info about the micron size of the fuel filters. Something I hadn't really considered before. I heard that 50 microns (which my filter bag is rated at) would be enough to produce oil thin enough to go through the injector pump of a standard Diesel engine. But I see your reasoning to be cost efficient and also reduce the risk of hassles/breakdowns... especially when you are in remote places... which is where I fully intend to be, as much as possible!!!
Yeee-Haw!!!
See ya on the road, Kids!!

You are a very well mannered hippie. I subscribed.

Present this car to german Tüv please :D

I recently sold my used cooking oil recycling company, but my videos from the last few years may benefit your viewers. Be advised the channel contains common vulgar language from time to time.

The major issue with the return line being routed back to the pump feed line is that if any air is introduced into the system it will cause the pump to cavitate and render it useless for moving fuel through the lines. Routing the return line back to the tank will not only help eliminate air from the system but aid in heating the tank oil and help circulate the tank.

Really good video!  Thanks. No one has ever gone into the depth that you have.  You answered a lot of little questions that I had.  Thanks again

you are doing good things. thanks for the video

Here in Australia, they lock the old oil up. Most places will not give it to U

Wow..
U r great

Toopp

In Hungary you can not make it because the excise tax

Hey, thank you for this video, it has been the clearest to me trying to understand wvo for myself. I was curious about your diagram and why the diesel switch valve comes after the fuel pump and not not before. Is there any problems with the diesel getting to the end when you start and flush?

Hi good afternoon, I have a school bus and I want to convert it to utilize waste vegetable oil and I was wondering if you be able to help me out

With the return line connecting before the switching valve, would the diesel circuit return to the veg oil tank? It would need to be after the switching valve yeah?

Building this system myself and running into this as a design issue. Would love input.

how much total would you say it cost for the entire system?

Is this a 12v Cummins or a 24v Cummins with a vp44? Curious because my truck is a vp44 truck and I would like to know if this can be done with my type of injection pump

your diagram is not showing where the diesel fuel return goes there is something missing from your diagram because if you send diesel back the way you have the diagram it has no place to go. Am I missing something?