Bernie165, not sure if you are still around, but here is a link to some UOAs (used oil analysis) for Kendall GT-1 5W-20 semi-synthetic. Every 10,000 miles for 100,000 miles in a F-150 5.0L V8
UOA Kendall GT-1 5W-20 SynBlend
Looks good to me.
UOA Kendall GT-1 5W-20 SynBlend
Looks good to me.