Hi folks, my refrigerant leaks (very slowly - takes about 2 + years to
leak out). So when this years AC produced no cooling I decided to DIY
refill.

My A/C was dealer retrofitted to 134, and I found a refrigerant at
canadian tire called Red Tek. It's compatible with existing system,
and apparently environmentally friendly (14$ per can, or 49$ as kit: 2
cans and hose/pressure gage).

Although my AC was not cooling prior to refill, the pressure in the
system (with engine off) was 40. I added one 6 oz can of red tek with
engine on and ac on. Now with engine off pressure reads 65. With
engine on and AC on pressure runs at 40, and down to 25 when
compressor kicks in. When I turn off the car pressure reads 65.

AC cools very nicely.

Is the pressure within norm? If not - what should I do?

Thanks! Mark