So....I have only run two synthetics in the time I've owned cars and maintained them. The first was Valvoline SynPower 10w30 in a '98 Blazer, the second was Rotella T6 5W-40 in the same vehicle. I'm considering a synthetic for the next oil change in my Dakota with a 4.7. I've considered Kendall GT-1 Full Synthetic 5w30, but availability has knocked it off the list. I'm thinking of trying the new P4, Mobil Super Syn, or Havoline syn, all in 5w30 grade. I've also considered Delo XLE 10w30 Syn Blend, but I want to keep with the recommended grade. Any other suggestions? I don't want to run any extended drain type oils as I don't do extended drains.