i'm fixin to redo the front suspenstion on my 90 coupe and have come to the conclution that it need new rod bearings.when i start the car the engine doesnt knock but you put it into gear and take of down the road,no hard drive away no boost,and you hear a knock in the engine for the first 2-5 miles.after that the knock goes away. my question is has anyone actually found there bearings in the copper and went back with standard bearings and had luck with it.when i did this i was planning on going to full synthetic15w 50 motor oil.anyone give me a thumbs up or down on this.thanks in advance.