What product can one use for internal tank and gearbox coatings?

[TrevorJ]

So what does one use?

This question comes up as I've hit an interesting problem here in Australia. I used to be able to get a resin type product for coating fuel tanks (it was red) and I think an air cured epoxy type for gearbox coatings.

I've not been doing much the last 15 years, so I was floored when I walked back into the same paint supplier (they told me bean counters at companies like ppg had killed off whole product lines as they weren't in great use or whatever BS) and they were stumped unless maybe if I wanted to buy in bulk from some other place they might have suggested ... I don't need more than a litre for a fuel tank and I wouldn't need more than 4 if I was doing a tractor gearbox.

I can find on the web a couple of "speciality" automotive products (which also refer to themselves as sealers) but since they're now on their own with apparently little competition, I doubt I'll find any others in competition that don't cost an arm and a leg ... and for the same price I'd head over to aerospace approved products like 3M's Fuel Resistant Coating EC-776. ($90 USD for a kg but I don't know if that price is still relevant)

[gecko.cx]

The stuff sold for motorbikes is Kreem https://www.kreem.com/fueltankliner.html
but I suspect the areospace product might be cheaper.

[mambo]

https://shop.sape.com.au/search?q=%22FU ... le&submit=

[TrevorJ]

Thanks ... I'd tripped over POR already looking about the web, kreen's sealer I had not, but both have pricing that ... reflects the "ready made solution" for the automotive market. Kreen's product pricing is similar to aerospace products as far as I can tell ...