For 1991 3 Series Sedan Second generation series 2 LCI BMW recommends to use: R134a air conditioning refrigerants. To select the right air conditioning refrigerant see the table below.
How much air conditioning refrigerant you need to put into 1991 3 Series Sedan depends on conditions listed below.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1991 BMW 3 Series Sedan user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.
Before doing any DIY service please check your insurance policy and BMW warranty policy for your region. In some regions DIY service may invalidate your warranty.
DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow BMW 3 Series Sedan service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.
Doing basic service for your 1991 BMW 3 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.
1991 BMW 3 Series Sedan generations
In 1991 BMW offered 2 generations of the 3 Series Sedan. Air conditioning refrigerant capacity may vary in different generations. Be sure that you are looking at the rigt modification.