I have a 2001 S60 (non turbo) which I bought in April 2007 with 95,000 miles on it. It now has 99,700 miles. The car runs great & have done the usual maintanance that it calls for. I bought the car to use for everyday duties & have no plans ever to sell it unless it dies on me. Since I intend to keep this car for a very long time & it has so many miles on it , does anyone think its wise to use synthetic motor oil from now on to protect the engine or just keep using regular oil with the maintanance? Are engine oil tretments a good idea? Also should I use from time to time a fuel injector treatment? All advise & suggestions are greatly appreciated!

 

Go synthetic! But about the other treatments I dont know. I was wondering about what benefit would come out of a fuelinjector cleaner myself, but dont know if I dare to put that kind of stuff in the tank.