Frigi Quiet is a brand name for the synthetic ester oil and additives that BG chemicals sells.

Syn Ester oil is claimed to work with all other lubricants. Personally I would rather have all one kind. The ability to use Syn Ester with different refrigerants is usually the claim. I am not certain how the different lubricants mix with each other.

The key here is whether they are miscible with each other. The technique for using ester with mineral is to add the required amount of ester and ignor the mineral. This is because the two won't mix and the ester is carried by the 134a.

In the case of Pag and ester I don't know and even though they both will work with 134 if they work together you would put a different amount of oil than if they don't mix.

I would flush and start over.