I need some help. I bought 10w30 full syn (Castrol) and put that in my Mach1 without reading the manual. I know stupid right. The oil is only 200 miles old should I drain it out and put in the 5w20 or should I wait till 3,000 miles and change it. By putting in the 10w30 is that going to hurt my motor. Will this change the tolerances in the motor? When I change it next time with the 5w20 will it hurt it. I am just concerned about my motor. I have 5w20 (Castrol) full syn on me I just went out and bought it. So any help would be great. I feel really stupid for doing this. I heard the 5w20 was just used for cafe reasons and that 10w30 may be better for it because it is a little thicker. is this true?