I wonder why the manufacturer doesn't use any moly in the product...? It's one of the more popular additive these days.

Lots of phosphorous and zinc, though.

 

So I say show me an OTS deisel oil with a TBN of 20 and you point me to an engine spec? The thread is about a specific HDEO oil, which has a TBN that is maybe in the 10-11 range. Many of Amsoils PCMO's are that high. And pump diesel is .5% sulfer these days currently transitioning to .015%, unless it is dyed off road use fuel. Even then very little is above 1.5%. Now there may be some Ag/Ind. oils out there that have a TBN cited in that spec as in the 20-30 range, but I have never run across them, and you can't find them in your local AA, Autozone, Meijers, WW, Flying J, Total or other retail outlet I suspect. I guess your alarmism is directed to those that may be tempted to use some oil obtained from some plant they work in or something or to those that operate outside NA and Europe. Yes too high a TBN leads to bore polishing, but to find that kind of oil today you are going to have to specifically hunt for it through a jobber or some other industrial source. To be safe however I guess the best advice is to look at the product data sheet of whatever oil you may be looking at considering for fleet use and know what the numbers mean and how they relate to your engine if you decide to go off the reservation with respect to manufacturers recommendations. To the original question, Rot T and Rot. T Syn are used by many as a fleet/dual use.

 

Rockledge, obviously TPs analysis is correct. I've been having to do my depts work and help out at the lab as well. We've been testing a lot of moly formulations lately. That and my age now is faster than a hiway speed limit and it doesn't always come out right. Info is right, just not for the subject matter, well, sort of. And I'm getting older too. Man, what a future I have to look forward to. And they say the mind is the second thing to go. I wonder what the first was? If testing proves to be as good as the preliminaries, look for a product called (at this time anyway) Miracle Power. It is the real deal in moly and zinc- no Phos. It should be the one to have for the older engines. The current SM oils are great for the newer engines. The marketing for this product should hit the streets in a few weeks so it is not proprietary info at this time. With any luck at all, these folks will have the proper funding to make this available nationwide.