i use regualar 10w/30 no synthtic in my ride but when i go to kragen i always see this bottle that is 7 bux a quart says 100% full synthetic racing oil my question is does that stuff really work ??? 40bux is a lot for somethin u throw out every 3k.

 

Well for one you don't throw it away every 3k. I wouldn't pay $7 a quart for oil anyway. Just get Mobil 1/Amsoil/Redline etc...

Do a search on the subject. It's been discussed to death. Good luck