Mekho

I have a 2003 GT and its time for an oil change. Whats the best type of oil to use on these motors?

Mustang3GT07

Royal Purple FTW!

DreamerGT

+1 on that

Chubstang

Royal Purple if you're a billionaire, Motorcraft if you're a hundredaire.

Frostbitten

I love Mobil1. Thats all I ever use but I have been thinking about switching to Royal Purple but its more expensive. If you use Mobil1 all the time the engine will last forever as long as you dont break anything...

Modular_Madness96

MOBIL 1 here too.

I use it everything from my bikes to mustangs hell its even in my lawn mower.

jwarner0297

As long as it meets factory specs you will be fine. I use mobil 1.

My reasoning is cause it doesn't break down as quick, which means you don't have to change your oil as often

max427

mobil 1 after 3k miles looks as clean as it did on day 1, but then again, so does motorcraft full syn.
not to say all synthetics are equal, but purp, mobil1 and motorcraft syn will all do the same thing, maybe more important that u grab a motorcraft filter.

jwarner0297

always get the motorcraft filter

Obsequious1

Fuchs Silkolene Pro R 0W-20 Racing oil. also used in my P1sc unit.