Hi. I am back with new thoughts approaches.
I do not mean to come across as a smart-assed, know-it-all.
Being able to fuel personally owned and worked IC engines has been a life long pursuit, and even occupation of mine.
For me it began with a “100 year” hurricane back in 1962 that killed off had been 30 years very reliable big-hydro power for all here for 60 to 90 days. By 30 days all of the available gasoline, diesel and farm tanked LPG was used up. Those with generators went silent. Thousands and thousands of cash-making long housed roaster (meat) and egg laying chickens died from lack of cooling fans and deep well water. Hundreds of cash-making family farm dairy cows sicken and died from mastitis (milk fever) from no power for the vacuum pumped milking machines. I remember my hands cramping from trying to hand milk out 50-75 cow herd twice a day. Cold-locker storage rental business back then had to lock us all out and hope for power restoration or spoil all.
Then a long decade later getting pants caught down AGAIN in our first Arab oil embargo cut off.
By our 1980 oil squeeze rationing I was prepared.
So Gerrard now your first DO NOT DEPEND ON THEM (outside energy suppliers) life’s lesson.
Internal combustion engines only really need some type of hydrogen’s-carbons fuels along with some oxygen to produce usable working shaft power.
The hydrogen-carbons molecular balance can vary from all hydrogen to all carbons. Extremes are fuctional-use very weird and nasty to use. Blended away from extremes is the best balance for practical usage. Just like whiskeys and people.
In the real world outside of a LAB (or over enthusiastic imaginations) all HC’s fuel will have some tag along remaining too expensive to remove, non-HC’s. Some giving neutral effects. Some actually under in-cylinder heats-pressures be combustion rate modifying beneficial. Most - residue making, maintenance driving drags on daily usable using.
No big deals as long as you avoid “idealism” perfections in the fuels; or the IC engines.
Here in the U.S.of A. long term use of supplied LPG will goo coat the insides of mixers, upper intake manifolds, even intake valves will left behind added into the gas leak-safety odorant sticky crap. Ha! Hafta", Solvents wash clean eventually for movements sticking and metering orifices clogging problems.
I was raised Rural.
I live Rural.
I only think in terms of fuels available, growable, harvest-able, usable by true living self sufficient Rural folk.
Again once you truely know a spectrum of IC engines for fuels those living Urban have lots of urban generated HC base fuel stocks. Tires. Plastics. Kitchen used oils and fats/lards. Used, removed lubricating oils, greases, Hydraulic fluids. Electrical transformer coolants.
Some can be used neat, as-is with just minor heating and filtering.
Some chemically modified and used as liquids.
Most all others jheats gasified into combustible vapor fuels.
Urban fuels wastes always carry clorines and other complex chained cancerous contaminates loadings.
Learn the IC engine ranges of possibilities and you can fuel with damn near anything biological based.
Even dead cats, rats. Even with people.
So why I do tend to pull off from just, ooh-woo, esoteric, fun-fun, technical possibilities into ethics.
Can still smell all of those dead chicken we had to bury. And sickening mastitis infection drippings.
trees smell so much nicer, growing, harvesting and processing.
tree-farmer Steve unruh