I have a 1992 Honda Accord and I am pretty sure that it uses the r12 (which is the older, more expensive stuff) but the macanic said that it might have been changed out for the newer stuff (I think r134 or something). Is there any way to tell which fluid is in it without taking it to the macanic? I am going to get my AC recharged but I want to know before I go in because there is a diffence in price. Please let me know. Thank you.

Melissa