With 3.2 remaining TBN I would not have the confidence to run another 5000 personally. 2500 or so would be the limit for me. I assume you will run another UOA at the finish line. Should be interesting. Thanks for the data point.
TBN 3.2 @15k miles.Huge drop in TBN from stated min. 13.5
My experiences lead me to expect slight oxidative thickening to occur between now and the next UOA.I couldn’t agree more. Historically we have seen good results in vehicles with crossover while running the TBN down to 1. While I am not a fan of that it does cause you to ask the question why. There are multiple methods for TAN as well as TBN. If you have a higher acid number compared to base number you would pretty much have to assume your methods are measuring strong base and weaker acids. If the reverse were true you would then expect that you would see the opposite of what your data shows.
David
Very nice results! Educating myself on this oil. How purchased and what's the cost?I collected a sample of the oil from my wife's 2012 Mustang V6. The sample was extracted through the dipstick tube. This is the first run on High Performance Lubricants HDEO 5w-20. I'll likely check again at ~20k miles.
I have read speculation that thinning from fuel dilution can mask oxidative thickening,The next oil change will perhaps be more telling. There is some dilution with the previous oil in the vehicle. There is also a chance that potential deposits in this engine may be dissolved into this oil change. We have esters in this formula like most of ours and therefore he oil will clean. The alkalinity will take a hit if this is the case. It is certainly a possibility as this TBN is lower than I would have expected.
6qt sump in 3.7 is IMO nothing to be proud of.6 quart sump capacity helps with extended drains.
I guess I was comparing it to my 3.5 quart capacity. What does pride have to do with sump capacity? Wow!6qt sump in 3.7 is IMO nothing to be proud of.
Ok, wrong choice of words.I guess I was comparing it to my 3.5 quart capacity. What does pride have to do with sump capacity? Wow!
I'm sure it being ester based it will stay clean much longer and clean up whatever was there prior. So long as the oil filter is top notch and air filtration is performing as it should then it might surprise us.My only concern would be that if your engine has VVT with cam phasers. They like fresh clean oil.
Looked at different engine oil capacities. Ecoboost 2.7, 3.5. Toyota, GM V6's and several V8's all 6 quarts or less and the list goes on. Maybe Euro makers are big sumps but certainly not most domestic or Japanese.Ok, wrong choice of words.
6qt is nothing. VW 1.8 4cyl engine has more than 5qt sump.