Join Date: Mar 2007
Location: Colorado Springs, CO
Car: 2005 Outback 2.5 XT manual
Feedback Score: 0 reviews
Mobil 1 synthetic 5W30. Don't buy the extended life unless you really feel like donating an extra $1/quart to an oil company.
I've been running my '05 OBXT on Mobil 1 since its first oil change, and have changed the oil every 10K miles since. I now have over 65K on the car, and it's going strong...I can still drop Boxters off the line (though that's not hard at 6700 feet above sea level), and I get over 24 MPG Hwy with snow tires and a ski rack on top. With regular A/S tires and no rack, I can occasionally get over 27 MPG according to the trip computer, but I think I get better than that because my A/S tires are taller than the OEM Potenzas I dumped and the snow tires.
Before my Subie, I had an '01 Audi A4 2.8 Quattro, and it came from the factory with natural dino snot and a factory-specified service interval of 10,000 miles. I asked them if I could use synthetic, and if that would make any difference, and Audi told me, "sure, in your pocketbook. But if you drive hard and it's hot [I lived in Vegas at the time], it may extend your engine life." I did drive it hard. And it lasted just fine...so well, in fact, that Audi bought it back from me and certified it with over 60K miles on it in November of '04.