hey, Don,
many thanks for the warm welcome, and good, good wishes right back at yer!
Your pal over here is, of course, quite right, and my salutations to him. Diesel vehicles have been taking off over the last ten years big-time. Diesel used to be half the price of petrol, the government encouraged us to go diesel as being 'good for pollution control'; then when we did so, they jacked the price up higher than petroleum! Don't ya just love 'em! I ran diesel vans for some years, and still have on old Series 2 diesel Land Rover tucked away somewhere, all of which i'd intended to run on cooking oil, like your buddy says.

Down here in Wales (the home of Catherine Zeta-Jones and Sir Anthony[Hannibal Lector] Hopkins) we cottoned onto the idea pretty quick - doesn't take much tech-work, just filtering and blending, really. Your exhaust fumes smell like a fast-food joint, which is just funny, watching people's heads turn, as they try to find out where the 'chip(fries) van' is...
...but then the law realised they were missing out on the 90% of tax duty that was levied on diesel, and came down like a ton of bricks on anyone caught driving with veg oil in their tank who hadn't filled in regular submissions
to the tax departments, etc, etc...

There was lots of impounding of vehicles, and now they set up road-site spot-checks to dip your tank; it's big-time heartbreak if you're caught out, but some of the guys still take the chance.

There's some real paranoia going down over here, with everyone in the public eye falling over each other to be the most 'green', with the internal combustion engine being made the fall guy for everything that's wrong in the
world
This LPG (propane) has virtually zero emissions, and is actually healthy to the engine, so lots of us are quietly going over to this as a way of still running a decent sized lump without being blamed for murdering the planet or whatever else...

I love the planet, too, but I've never been a fan of hysteria ...and I love big engines.
If Leonardo da Vinci was alive today, you can bet he be posting some serious
build pics on this site...

thanks for the words of encouragement,
Len