probably R-12 usually newer cars require r-134a
First what is wrong with you headlight switch on your 93 topaz.
All cars after about 93 or so used the new r134a
R12. I don't think 134a can into use until around 1996.
A 1993 Toyota 4Runner uses R12 refrigerant. The 1993 Toyota 4Runner requires 30 ounces of R12 for all engine types.
take it to a dealer
8 ounces of refrigerant oil...................
94 went to r134. but if it is really a 93 chassis, I wouldn't know I think that was the change over year from r12 to r134
You may use same oil as the automatic transmission oil. If you don't have any, any auto parts shop will. Dexron.
R-12
Looking at the front of the car, down around the oil filter.
Clean them and see.
The correct type of gas is super unleaded 91 to 93 octane.