I am driving around in a 91 Accord with 80k miles. Engine runs like new, but the body has extensive rust and the exterior is in rough shape. The car experienced harsh midwest winters with the original owner. Prior to my last car being totaled in an accident, I purchased 3 bottles of Auto RX and I have two bottles remaining in my inventory. The previous owner of my car informed me that the car sat for about 18 months 2 years ago. My oil inventory consists of 16 quarts of "Car and Driver" 10w30 I purchased on clearance from target 2 years ago for $.50 QT...I just couldn't resist the price. In addition, I have 4 qts of Mobil 1 10w30 and two SUpertech oil filters. I plan on keeping this vehicle "until it needs a major repair". The previous owner had Valvoline all climate and a carquest filter in it which now has 3800 miles, so i will need to change it relatively soon. Should I use the auto RX on this clunker or wait till I get a new car whenever that may be. Is it safe to use the Mobil 1 and then switch over to the generic car and driver oil? I'd like to run 5000-7500 OCI on the generic brand oil. Is that OK...I suspect the rusted out body will fall apart before the engine seizes. Let's debate what I should do with this clunker given the facts above. If the body was as good as the engine...I could get 10 more years out of this vehicle!