There's a bit of a conflict here.No need to worry. My late 2008 MBP 15 is still going strong. Had to get a non-Apple replacement battery last year. And, I spent a couple hundred dollars on 4 extra GB of RAM and a 300 GB SSD.
So, just rotate the tires regularly and change the oil according to the owner's manual and you'll be fine.
I hopped up my Benz C-Class wagon with Brabus headers/exhaust/cams/crank and AMG quick-shifter/anti-sway bars/springs/wheels and my E550 with lots of AMG mods and BBS wheel. Oh, and Michelin Pilot SS tires - just rotated. Serious fun that gets me there with a
I'll take my new rMBP with a Xeon and 32GB of RAM, in Silver to match my two MBs - modded, zippy, and ready to get to work... :evil grin: Cheers!