If your paying 37.7 ppl and your local is selling it at 57.7 ppl ..... I recon I'd be encouraging friends, family and neighbors to change and then sell it at ....say 47.7 ppl You could pay for the tank a lot sooner, like under a year  Yesterday I couldn't spell Engineer... Today I are one!
Inventor of the 'Guide-o-Matic automatic wheel alignment tool'
Former long term L322 owner, Up/Down graded to a Classic Tractor!

Sounds like a plan but i did look into it, ok for good friends but technically if you want to sell petroleum products you have to have a licence and hazard material training etc etc, so could probably get away with it a bit but not for loads of people.

How is this going?

Does it still work out for you?