I'm running Motorcraft 5w20 in my 2007 Tacoma V6 4.0L and the truck has never run better! I've run everything from Mobil 1, Royal Purple, Castrol GTX, Syntec, Pennzoil conventional and others in 5w30. I have 62k on the truck and Motorcraft 5w20 keeps the engine quiet and smooth. I'll get a used oil analysis up after this run. By the way, I also run the Motorcraft FL400S in my Tacoma due it's excellent bypass valve. So, I guess I'm saying that I agree with Johnny and you have made a great choice.