Well I have two tins of the green Aldi stuff and am picking up a steel central heating oil tank next week to use it on.
A pensioner friend of my parents had a small leak appear in his steel tank. He then ended up paying over £2000 to have somebody replaced it with a plastic one. They must have seen him coming as the support structure they have built is rubbish, the tank isn't even positioned squarely (ie it just looks wrong when seen along with the hard landscaping features which are square) and the plumbing layout is rubbish too.
Anyway, they then wanted another couple of hundred pounds to get the tank and it's couple of hundred litres of remaining kero out of the garden (to which there is no vehicle access).
I, of course, have volunteered to relieve him of the tank and kero for free. The kero will go well with the palm bio in my heating and I need to cut down his tank to the correct size for a job I have in mind.