Did the UOA just as an integrity check on dealer using bulk oil. Additives and viscosity a little lighter than I expected, especially since I was 1/2 quart low (10%) when sampled, but pretty much within SP range. Results look good.
This PR25DD engine is a 2.5-liter with GDI.Looks good! Thanks for doing it and posting the results.
I wonder how the newer GDI 2.5s compare..
Do you plan on asking them about their oil or discussing the uoa results? I suspect you may blow their minds with your knowledge so be careful.My oil and filter changes are free from the dealer so long as I do my scheduled maintenance there. I get suspicious of bulk oil quality, which is why I did this UOA.
From previous conversations with the dealership it is clear they do not know how to spell "oil". No need to confuse them more!Do you plan on asking them about their oil or discussing the uoa results? I suspect you may blow their minds with your knowledge so be careful.
Too bad you don’t have access to a Gas Chromatograph. Or do you?![]()
Thank you for sharing! Wear metals per 1000 miles is nearly half of universal averages.
I wonder how BS knows you could've gone at least another 2k miles? No TBN, no oxidation result. The only other potential number I see that could give a hint at oil life is the low Boron. But we don't know its starting value. Do they secretly run TBN anyway, and just don't give you the result if you don't pay for it?
Have similar vehicle that receives dealer oil changes and I noticed the oil level was below full mark. The service manager gave my some line of BS about oil needs room to expand. Ever since I called him out on it, the oil level is now on the full mark after being changed and no makeup oil is required between changes.I was 1/2 a quart below the full mark on the dipstick. This was the first time I noticed any oil loss in 50,000 miles so I wasn't checking often enough.
My oil and filter changes are free from the dealer so long as I do my scheduled maintenance there. I get suspicious of bulk oil quality, which is why I did this UOA.