Lubrizol is thinking it is time to reevaluate their use. What say you?
How is Lubricant Lifetime Measured
360.lubrizol.com
I think they were inferring in the end that maybe the use PH scale.I think it's a valid observation, but they don't offer an alternative?
I think their point is that in the absence of sulfur, the TBN drops a lot slower. It would take a lot more miles or runtime for TBN to drop significantly, while in the meantime other properties of the oil may render it unsuitable for further use.Why would the ph drop is it wasn't combating acid?
I think their point is that in the absence of sulfur, the TBN drops a lot slower. It would take a lot more miles or runtime for TBN to drop significantly, while in the meantime other properties of the oil may render it unsuitable for further use.
My take on the article is With the lower sulpher fuels acidification May not be the best measure of when an oil is spent. like Donald said above, oxidation fuel dilution and I will add soot and solids from modern direct injection used to gain more power per btu of fuel unit. These can lead to the oil being spent before the acid numbers or lower TBN May indicate.
Do we understand How much fuel and soot can the oil hold in suspension before it begins to deposit those solids?
Nobody said it was the sole determining factor, but TBN/TAN relationship historically has been a key factor, especially in fleet applications.But who ever thought that TBN was the sole determining factor?
you don't need tan, tbn, etc. ... When oil gets kind of dark it's shot.
Experts like to find ways to be different like color doesn't matter. They prefer to spend $20 plus time and trip to the post office to get a uoa. But one uoa is not enough and you need to establish trend (i.e. additional $20 every every oil change) ... lol
DI is not as bad. With diesel, the oil will turn dark within the first 100 miles. It doesn't mean it's shot.lol no I haven't but I have a DI which is as bad ...
DI is not as bad. With diesel, the oil will turn dark within the first 100 miles. It doesn't mean it's shot.
If determining oil condition was as simple as looking at, the whole oil analysis industry would not exist.
I don't think anyone is suggesting that an "average Joe" should do a UOA prior to every oil change. To me, it makes sense to do it once or twice, just to help you figure out a safe OCI. Once you figure this out, no need to keep doing UOAs unless your driving patterns drastically change, or you suspect some serious engine issue such as coolant contamination.Other than that, it's not cost effective if a uoa cost almost as much as an oil change. No?