Put brake fluid and power steering fluid in my van today.
Changed (swapped out) the broken back-up camera fur a spare one I had.
Success (so far).

Furgot to say even put gas stuff in the air con to make it cold again.

All the stuff that was meant to be there got out somehow.

Then putting more won't help for long; you have to find where the gas gets out first!

Agreed - but (we've had this conversation befur) a tin of top up is $8. A fault find and fix is $800. The tin says if it's not the condenser or evaporator, it's most likely a seal in a pipe somewhere - and this stuff searches them out and blocks the hole.
No. I don't believe it either - but no choice.