Thought the title would pull in the 6.0 guys, but this is a question for the people that know someone or who have actually went extended OCI's themselves with a quality 5w40, 10w30, 5w30(amsoil hdd), had a bypass filter, and UOA's to back the extended OCI's.
The quality oils that come to mind are: Rotella, Delo, Redline, Amsoil, Valvoline, Mobil 1, or John Deer.
What is the BEST You have seen proof of with good UOA?
I've seen a good UOA for a 6.0 powerstroke running the Rotella T5 10w30 It was taken at approximately 8,800 miles if I recall correctly, but that is as far as I've seen the OCI taken on these HEUI engines that are notorious for shearing oils over 30w.
I was thinking about trying the Amsoil 10w30 ACD with bypass filter and doing 5,000 miles UOA's and seeing if that full synthetic would achieve an extended interval more towards 15000-20000 miles, but I'm looking for proof that it is worth the extra money compared to the Rotella T5 10w30 or any of the other options out there.
The quality oils that come to mind are: Rotella, Delo, Redline, Amsoil, Valvoline, Mobil 1, or John Deer.
What is the BEST You have seen proof of with good UOA?
I've seen a good UOA for a 6.0 powerstroke running the Rotella T5 10w30 It was taken at approximately 8,800 miles if I recall correctly, but that is as far as I've seen the OCI taken on these HEUI engines that are notorious for shearing oils over 30w.
I was thinking about trying the Amsoil 10w30 ACD with bypass filter and doing 5,000 miles UOA's and seeing if that full synthetic would achieve an extended interval more towards 15000-20000 miles, but I'm looking for proof that it is worth the extra money compared to the Rotella T5 10w30 or any of the other options out there.