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Yeah..stock internals. I just have a tune, intake and exhaust. I heard M/C is a great oil. Right now I'm using PP.

Does anybody know the difference between the Valvoline Roush oil and regular Valvoline Synpower other than price? Is the Roush oil worth it? I have a 05 Mustang GT. Thanks

I've read that some people are still putting 5W-30 in the 4.6 because they say it protects better. Something about Ford only wanting 5W-20 for better gas mileage. I'll stick with what it's specd for. I just can't see spending $9 for a quart of oil because I change it frequently.

Originally Posted By: NHHEMI Originally Posted By: JBD27 First of all I'm new here...been reading for the past couple months and have learned a lot from you guys. I bought a 2005 Mustang Gt in August and did my frst oil change using RP in November. After reading several posts on here about PP I...

First of all I'm new here...been reading for the past couple months and have learned a lot from you guys. I bought a 2005 Mustang Gt in August and did my frst oil change using RP in November. After reading several posts on here about PP I decided to make the change. I just PP 5w-20 in and drove...