Nope no sealer. The static pressure is 50 psi at 15 degrees celsius. I thought that would be enough to get the compressor to engage as it didn't take much the first time I did it.

I recently replaced my vans AC compressor then just charged the system with about 1.5 of those recharge cans. It worked great a few times then stopped after a few days. I thought I might have over filled it so released some freon but the compressor still wouldn't come on. I thought I better do it pr...