Originally Posted by MParr
Originally Posted by rubberchicken
Originally Posted by MParr
Yeah, I read the notes. At 14.91, that's even high for a 5w40 after being run for close to 9,000 miles.
Yes, I am not sure how to deal with that. The same exact oil was run on the previous OCI, and the same driving style, same geographic area. I just noticed that you have the same vehicle- have you done some UOA ? If yes, I would be interested in seeing your data for comparison.
No, I haven't done any UOAs. I have seen many other UOAs from people with Ford Ecoboost engines and my oil choice is based on those. I tend to run 5W30 oils that are on the thicker side and do 5,000 mile OCIs. Motorcraft, QSUD, and Mobil 1 original are my usual choices. Since Chevron has introduced their Havoline Pro DS in a 6 Qt. container, that will go on my list as well.
Your prior UOAs look exactly as they should for OCIs over 5,000 miles.
In fact, the first one you have listed looks pretty good. It was done at closer to 5,000 miles.
You might want tp re-think switching different oils all the time. Pick one quality oil and stick to it.