Royal purple 5w-30w
I started searching this forum to find how hard it is to change a cam out on an 07 gt. One of the cam followers on my sisters car(intake no 1) failed and took out the cam. come to find out it wasnt hard at all and only took me a couple of hours. but that is not the point of this thread. The point is, when i went to change the oil after changing out the cam, cam follower and lifter. i found she was using royal purple 5w-30w and didnt think nothing of it till now.
this morning i was looking up oil for my mustang and found that ford recomends 5-20, not 5-30 or 40 because of the tight tolerenced in the upper end. I will be recomending 5-20 to her today and probably not RP. I am partial to mobile 1
I am niether looking for advice or confirmation, just letting you all know. So please dont chastise me for not doing a search
PS: I did it without the use of fords 400 dollar tools either. you can wire up the cam timing chain with stainless safety wire, and i built a valve spring compression tool out of a piece of 1/8" x 2 flat bar