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Audi A4The Audi A4 model offers nimble handling and performance that makes it one of the leading cars in its class. Read more about the Audi A4 in the Audi A4 review.
My A/C is not that cold, I need to add some R-134a to the A/C system, but I do not want to evacuate the system. Should I add plain R134a or mix of R-134a and oil?
I only see two types of R-134a cans, one contains about 20% oil, the other is pure R-134a. 20% is proportion of oil in refrigerant as stated in the service manual. Should I go with the can with 20% oil?
I just a got 98 Quattro A4 2.8, love the car. Everything is great and working properly but for my own knowledge did the 98 require R134a or were they still using R12 in those years.