This is the product:
And they so conveniently have the MSDS available and it's readily comparable to their regular 134a:
The can says it contains 11 oz of 134a and 2 oz of their special Sub-Zero OIL (as it turns out, a synthetic oil). I'd hate to assume it is compatable with the regular oil, but it's hard not to since it doesn't specify. Considering this special stuff is an oil, wouldn't one need to remove 2 oz from the system before using this stuff? Any opinions or experience with this product? I believe my system has plenty of oil in it; the compressor remanufacturer said it was loaded and don't add any oil when charging. I'm leaning toward putting good 'ol plain R-134a in instead, but since I have the evaporator out, I might be able to remove 2 oz of oil...
Another related question.. how do you know if there's too much oil in the system? I replaced the drier and compressor and did a 134a conversion on my 93 civic, but for all I know, there was mineral oil still in the evaporator, condensor, and lines. I guess the right thing to do would be to flush the system... but how does one really know if there's too much oil in the system?