Anyone tried air tool oil as a chain lube?

I am getting pi33ed off with paying the equivalent of about £50 a litre for Finish Line.

I was thinking of trying some air tool lube at £6 a litre.
Air tool oil

Will my chain fail in spectacular fashion and will I be thrown to my death? Or will my drivetrain wear out quicker and actually will it cost me more money?

Anyone found cheaper effective alternatives?

certainly looks interesting…

Any oil is of course better than none
don’t see any advantage for air tool oil over others.
Chainsaw oil let down with a little white spirit or paraffin is good.

I am using EP90 Gear oil left over from my landy trailing days smells a bit
but is hard to wash off

oil of naturally high viscosity index

Dirt will stick it, so not the best. Also, how often do you really need to buy chain lube? I reckon I might buy a bottle about once a year. £6-7 once a year isn’t bad and if you get a litre bottle of something you’ll have it knocking around for years and years to come.

buy in bulk – as thta makes most stuff cheaper

I’m now trying Stihl chainsaw oil (bout 7 a litre ebay) and so far ok (well slighly mixed with Fenwicks as I’m using it via a smaller Fenwicks bottle) but it does seem to attract more dirt than bike specific lubes (*also conditions worse than usual ..)

might try thinning tip offered above

oil of naturally high viscosity index

I took that to mean that it flows easier? Or is it saying it is a thick oil?
According to the data sheet it seems to have low values?

ATO tech info

Any engineers who understand these numbers? How do they compare with typical chain lube?