My mechanic has converted an old Toyota 4x4 type thing to run 2 different types of fuel.
He'* installed 2 fuel tanks.... and done serious modifications to the engine.... it runs normal diesel, and bio-diesel now.


Apparently the different types of oil you us, makes a different smell... if you can get clean cooking oil from KFC of McDonalds... your exhaust could smell like chicken or BigMacs/Fries...

If it was clean oil it wouldn't smell like that cause it wasn't used yet. At my work if some onion rings/cod etc are cooked in the wrong vat you'll hear about it quick...