boostisgood is right. I worked in a garage with a quick lube and all of the turbo customers kept asking me this question (mainly because my name tag said "turbo"). Thinner the oil the better. The more it flows the more heat it will pull away from the motor. If you stay with a dino-oil I would use Valvoline 5W20. If you want a synthetic try Royal Purple 5W30 or similar synthetic. I like royal purple because of their hp increase claim. I can't tell a lick of difference, but I'll be damned if it's not 100% man made oil. Most synthetic is a blend. natural oil with synthetic additives. Check out royal purple's website for more info.
As for coolant. I personally use a bottle of redline in the stock mix. On my SHO race car I used 100% disstilled water with redline and a lower temp thermostat. that car would never heat up! The heater never worked after hat!!