Has anyone switched from Motocraft to the new Amsoil 5w-50 and posted any analysis numbers on this? Just curious.
Is anyone running Amsoil 5W-50 in their FGT?
- Thread starter GTMikey
- Start date
GT Tech
Ford GT Team Alumni
Some years ago, while dyno testing a prototype Ford Racing crate motor at Roush's dyno lab, we ran back to back comparison pulls between Mobile 1 and Amsoil. The Amsoil pull was within 1 HP of the Mobile 1 pull. A statistical dead heat. We didn't try the Motorcraft (Conoco-Phillips) full synthetic, but I would think it's in the same neighborhood.
Biginch Blake
GT Owner
Is there a shortage of Motocraft 5w-50w oil? I run it in all my cars and have had good luck, why smack the Hornets nest. Ford oil works!
Indy GT
Yea, I got one...too
Counterbalancing the above, I change the Motorcraft oil in my GT MUCH sooner than 3000 miles, thus the "thinner than spec" observation is a moot point.
I will continue to use the recommended Motorcraft oil in my 5.4. (But I did convert to Rotella, per your data, in my other daily driver).
I will continue to use the recommended Motorcraft oil in my 5.4. (But I did convert to Rotella, per your data, in my other daily driver).
06fordgt
GT
I have not yet but do run it in my Shelby cobra 427 stroker motor. Since its is way past warranty might be a good idea to change it over now.