Please shut up with the ****ing SPAM. Go away you stupid Bastard!!From your comments, i can only believe that you have never used Engine Restore with CSL. I HAVE used it on several vehicles and have been amazed at how good it is. If you can keep an open mind to new technology then read the testimonials on the following sites: americantechnology co uk and restoreusa com
10w-40 in a 4.6 not a good idea. with the tight clearances on these engines.Use a good synthetic oil and your car will love you forever.
I swear by Royal Purple 10W-40. Not to mention its been dyno proven to give you a few extra ponies and its a fairly surprising seat of the pants gain too.