Starting to get warm outside here and doing my summer tasks.

My low side cap was a little loose, so I tightened it - and it snapped off. The little plug from the cap was stuck inside pushing down on the valve, slowly leaking my r-134 out. Not much I could do because the plastic piece was stuck inside the valve, and could not remove the r-12 to r-134 conversion piece.

It was a very slow leak, and once out I put a new adapter right back on. I could not see any traces of oil leaking anywhere.

So now when I refill, should I put just plain r-134 in since it was a slow leak out and no oil appears lost, or does oil somehow get carried out of the system when leaking?

Thanks for your input!