I'd take those results any day, even over the Castrol or Kendall you've been running. Looks good!
Yeah, I was a little surprised the iron went down to single digits. Not that I thought the iron was an issue at any point but I still find it interesting. The next UOA will also be on the Valvoline and it might become its regular oil if all looks good.
Originally Posted by JLTD
Agreed...looks like that's a better oil for your EB. Let me guess -- no driveability issues?
And since you're in Florida, you can use it year 'round.
Looks great! Long term I can only see catalyst issues from the additives in the HD oils, but totally worth whats gained IMO. For colder weather people thinking about switching, I think this comes in 10/30 also. If not Rotella does.
High oxidation is typically a sign of oil degradation and your oxidation <span style="font-style: italic">is</span> "high". But oxidation is one of those parameters <span style="text-decoration: underline">you can't look at stand alone</span>. It compliments TAN and viscosity. It would be nice to see what the TAN is to get better visibility into whether or not your oci's are too long. Do you know what the virgin 100c kv is?
Thanks for sharing. I am also running 15w-40 in a '16 3.5EB. I had a partial pail of Delo 15w-40 in the shop for a while and I decided to use it up on the last oil change. I've got about 4,000 miles on it now and the only difference I have noticed is that the oil turned a very dark color in only a few thousand miles. Not sure if that is just the nature of this oil, or if it is doing some cleaning. I will hit the 7,000 mile mark sometime in November, and will switch back to 5w-30 for the winter.