In light of my recent dealer visits for a piston slap issue I've decided that until my warranty expires (another 12,000 miles) I'm using nothing but 5w-20. Here's a short list of ones I'm considering in order of preference. Comments and suggestions are appreciated. (The vehicle is a 2001 F150 4.6 ltr. v-8)
1. Mobil Drive Clean 5w-20
2. Catrol GTX 5w-20
3. Honda 5w-20
4. Motorcraft 5w-20
The only reason why the Honda oil is third and not higher up in the list is because I shudder to think what the dealer will say if I hand them a Honda motor oil. Also, anyone seen a VOA (or even UOA) on the Mobil Drive Clean 5w-20? Supposedly it's a group III oil. Castrol GTX seems to be a consistent performer.
Thanks in advance for replies.
Mikep