Hi All, Going on a long trip soon, with my 2008 Mustang GT (Bullitt, 4.6 3v). Usually for this car I use Mobil 1 5w20. This isn't my daily, So I usually change the oil once a year (maybe 3k miles). I will be doing roughly a 3,000 mile round trip soon, including some pretty hard high RPM driving at time, as well as highway running A/C in general heat. The car has 3.73 axle ratio, so highway engine RPM is a bit higher than normal with the 5-speed, approaching 3,000RPM on the highway. My first thought is use my normal go to, M1 5w20, however I'm thinking what other oil may be a good choice to handle this rougher than normal trip. I was looking at Pennzoil Platinum Ultra thinking that may be a good choice also. After this trip I'd like to do a UOA and see what things look like (and I'm currently using M1 5w20 in my Jeep so I can test that separate). Would PPU be a good choice for a run like this? I don't really want to spend the $$ on the more boutique stuff. Also, I do know the debate about 5w20 or 5w30 in these modular fords, but I've stuck with 5w20 thus far, and I'll be getting it tested after this to see how it holds up. Thanks for any input.