I just rebuilt a 4g63 turbo 2.0L DSM engine with higher compression pistons (forged wiseco units) stronger rods, obviously new bearings, oil pump and so forth. I was thinking i would run a good synthetic 5w20 (M1 Amsoil redline royal purple, the high dollar ones) after a proper break in on dino. I plan on running around 20lbs of boost through the engine, but the car will be mainly a daily driven weekend warrior so it wont see wide open throttle for more than a few seconds on a daily basis and on weekends it will streatch its leg a little. do you guys think i am crazy for wanting to run a 5w20? PS if you need any more info on the engine just let me know.