We're off the oil topic a bit, but hey...that's BITOG! I would go synthetic as recommended. You'll find that you can get a better price on resale. As far as trading in whil resale is high? well...I am of the opinion that: the cheapest method to owning a car is to keep it forever...then my annual depreciation is near zero... My signature proves that mentality...I've only sold a few, and I did get more for my '85 TA when I could prove that I used M1 exclusively... To the fluids, the OM on your car probably spells out a few of these, but here's my advice: 7500 miles/12 months oil & filter 15,000 miles/24 months for air filter (do the cabin filter at the same time) 30,000 miles: trans & differential every 2 years: brake fluid (flush it) PS fluid - every 5 years or 60K. Coolant - every 5 years or 60K (I know, Volvo says coolant is for life...I don't buy it...). at nearly 10 years old, both the Volvos run perfectly and the interiors/exteriors look new. IF you really want to sell this great car after only 5 years...PM me, please!