Originally Posted By: Gokhan
Originally Posted By: jsinton
Originally Posted By: NMBurb02
Originally Posted By: Gokhan
OP, as I said, you will need to multiply your wear-metal ppms by 3.5 to adjust for the amount diluted by makeup oil. Then you can divide the adjusted ppms by 10 to get the ppm per 5000 miles.
Actually, your math is a bit off because it is assuming 1 qt added to a 5 qt sump. OP's car has a 3.75 qt sump. I could probably follow your math on any other day, but it has been a long day and my brain is pretty much mush at this point. Can you calculate the correction factor with that new data? I know it will be higher.
Actually, I usually fill with 4.5 quarts with a complete oil change to bring oil to the fill mark. The owner's manual says 4.2 quarts or 4 liters.
Redoing the calculation for 4.5 qt, I get a correction factor of 3.73x for 1 qt of makeup oil added every 4k miles and UOA done at 50k miles. Of course, as with anything, this is only an estimate, and it assumes uniform wear through the 50k OCI, which obviously won't be the case here, as the wear will accelerate greatly with increasing TAN.
This means, when you get your UOA results, multiply Fe, Al, Cu, Cr, Sn, and Pb by 3.73 to get the actual wear amounts. Then you can divide it by 10 to get the average wear for 50k/10 = 5k miles.
So exactly how many nanometers/microns of wear,in relation to the ppm wear metals are found in the oil.
And I think you're wrong about the base oils wearing out. Sure there's oxidation and nitration however.
It was my understanding that the base oil in a lubricant never wears out however the additives in the lubricant do deplete which then allows acids to build up.
With by-pass filtration and an alkaline base/concentrated additive package carrier would neutralize the acids in the sump and by-pass filtration catching everything a micron or smaller,which could delay oil change indefinitely.
If the oil is filtered so clean that insols are nil,and a concentrated alkaline additive which contains everything that depletes during use could easily eliminate the need for oil changes. Ph levels could easily be adjusted from acidic to alkaline,which cans your acid theory. Just change all the filters.
If there was a concentrate of course.
I know liqui-moly motor oil saver contains boron and is alkaline which helps extend oil change intervals.
Gohkan. I think your off on quite a few points in your post.
Yeah. I read it over. I'm not even going to get into picking it apart.
Sounds nice though