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all you need for an internal combustion engine is a combustible fuel. ever driven through qld ? wheat and sugarcane.

crush, add water, wait...

As long as Miller is concerned, he could put a plant like in MM2 every few miles in the wasteland. Suspension of disbelief.
It just so happens that post-apocalyptic Oz is loaded with oil. The only place that's dry is small area around Bartertown, or Master just prefers shoveling shit over drilling.

shoveling shit would be easier than drilling. my moneys on bio

So let's review some I.C.E. Fuels, shall we?
A quick note: Less energy means less mileage & less power. More energy means more power & Better mileage.

Ethanol - Produces less energy than Gasoline does per cubic inch of storage. (60%, or so, I think

Requires suitable, high-sugar plant materials (Ideally)
Requires carefully controlled heat source for distillation

Methane - Produces less energy than does Ethanol (40-50% of Gasoline, Possibly less)

Toxic
Requires complex gas capturing equipment
Requires Animals & Animal Excrement

Biodiesel - Produces less energy than does standard diesel but I'm not sure how it compares with Gasoline (It's kinda outside my area of interest.. I've been more interested in the retrofitting of Gas/Petrol cars)

Natural Gas - Honestly, I don't know how this compares. I've seen numbers that point it out as a fair equal to Gasoline, but not sure how accurate.

Hydrogen - Produces more energy than gasoline

Requires clean water
Requires gas capture & compression
Requires electricity.

Of note on Hydrogen, IMO it's the simplest to "create" but has some problems when it comes to burning it in an I.C.E. engine.
So I'm not sure how easily it could be "Cobbled together" in a wasteland setting

i ran my 2.8 mitsubishi turbo diesel on neet vegie oil for some time without any conversion, didnt notice any drop in power only a nice smell. whent like stink

Iike I said, Diesel & Biodiesel are a bit out of my area of "expertise"

The reduction in power & mileage is something I've read from many sources, plus what I've heard from men doing a lot of experimentation (Former customers of ours back in the '80's & '90's. Doing Biodiesel Loooong before it was even a word)

I imagine your Turbo is compensating for whatever power loss you'd be getting otherwise.

I, myself have noticed fewer miles on my Jeep's odometer when I run 10% ethanol blend Gasoline.
Power loss isn't really noticeable, but I'm sure I'm losing SOME.

yeay who knows? interesting ting is the diesel engine was designed by mr diesel for impoverised farmers so they could grow there own fuel ie vegie oil, the major petrolium producers hijaked the supply of fuel, everyone got used to buying it of them, now a lot of peaple are trying to sell it back to us as their idea. just wack it in! the only prob youl get is the fuel lines can break down (filter and replace with some that wont when there shot) and vegie oil is a bit thicker which can put a strain on fuel pumps (most jap and german pumps are ok. if you live in cold country fit a filter which uses radiator water to pre heat it ,aka vw polo), there you go max how to run a derv engine on veggie oil with no bulshit,. put a seven ltr v8 diesel in your next interceptor and rule the wasteland. i cant wait, im not far from broken hill so will defo be hanging around waiting for a glimpse, see you on the road bronze