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Hi, @Sonofsonof , Happy to see you again :) In fact, a very similar test was performed. Here are the results with the oil temperature at 90 C You can see the rest of the tests carried out by Toyota R&D in 1997 here:

Oil-club.ru has information about oils called Extreme. These are special kind of oils - real full synthetic oils. One of the people involved in the production of these oils has explicitly stated the content of PAO and Esters in their composition. I will give an example with 5w-30 oils: Extreme...

Please note that the 5w-30 prototype with Ester FE 2.x has 42% more viscosity modifiers (VM) in it.

I just want to emphasize that VII coil size expansion with temperature is not necessary to achieve significant elevation of viscosity index (VI). The results in this study - How Polymers Behave as Viscosity Index Improvers in Lubricating Oils, show that coil size expansion with temperature is...

Hello OVERKILL, As far as I can see from the pictures posted from you in the other thread (in European and Import Motor Oils) your oil has been produced on 10.2016 (info on the 1 L bottles). Oil-club.ru had (now it is gone) a VOA of the Ravenol SSL 0w-40 oil from batch produced on 02.09.2016...

Originally Posted by Bjornviken Originally Posted by emod ... the discussion of the Ravenol's oils in this forum was forbidden - a conflict between the oil-club.ru and the company Ravenol. Why was it a conflict? This is a sensitive topic. I do not want to comment on it. All I can say is...

The oil-club.ru had an analysis of this oil. It was made in 2015. Here it is: And this is an FTIR of the oil: This is the oil that was tested: The analysis is no longer available in the oil-club.ru, as the discussion of the Ravenol's oils in this forum was forbidden - a conflict between...

Originally Posted by Patman ^^^ hopefully someone here speaks Russian and can translate some of that for us? (in other words, is this formulation better or worse than the old one? What is the Noack on the new formula?) This is what I can do for you Summary: Again Mobil1 produces advanced...

Originally Posted by RDY4WAR I feel like this thread should be a sticky. +1

Originally Posted by SonofJoe Before this thread dies... Thread like this never dies. It just waits patiently for the seeker.

Thank you SoJ for all of your efforts that gives us a better understanding about TBN contributions of different metals

Great info SoJ! This is what I found about overbased sodium sulphonate: "A lot of overbased sulphonate have been commercialized, including calcium sulphonate with a TBN of 300—400[1-2], magnesium sulphonate with a TBN of 400[3], sodium sulphonate with a TBN of 400 and other sulphonates, and...

Originally Posted by JAG That's the first commercially produced line of motor oils I've seen that mentioned using oil-soluble polyalkylene glycol (OSP). They also mentioned the more common esters and alkylated napthalene. They are making advancements, not just tagging along. Very cool. In...

Concerning SDS ^^ - In another thread, discussing Red Line oils, Tom NJ has pointed to something interesting about base oils they use, namely: Originally Posted by Tom NJ Interesting to note that they are using dodecene based PAO instead of the normal 1-decene based product. The dodecene based...

Originally Posted by SonofJoe Boric acid is a white crystalline solid & a rather weak Lewis acid. In an ashless dispersant, it will be weakly bonded to one of the basic nitrogen groups in the polyamine part of the dispersant. It could be that over an OCI, stronger acids formed by fuel...

Thank You SoJ, I may be wrong, but from the UOAs that I have seen it seems that the Boron depletion in diesel engines is "less" that this in gasoline engines. This somehow may be linked with your theory, since diesel generates more of soot and less of water during combustion (compared to...

Hi everyone, Great thread! I also have a question. It concerns Boron (mentioned earlier in the thread) and more specifically its depletion in used oil. All of us have seen that when comparing Boron levels in VOAs and UOAs. For example - starting level of Boron in virgin oil can be 257 ppm, and...

Great info. JAG! And I have found the following info. about the Red Line oil: "Redline is not a Gp V oil. By gas chromatography it's only 15-18% polyol based. The rest is a crude Gp III and at one time was furnished to them by BP Houston." You can find it here...

THANK YOU, Tom! For the first time I have an opportunity to look at all these data – VOA, FTIR and GC, gathered together and related to particular engine oil. It seems that we have a “very good clue” (I intendedly don't use “confirmation”) that the FTIR absorbance at 722.10 cm-1 gives adequate...

Hi JAG and Tom, Discussion is really great. Thank you both! Tom’s answers help me to have better understanding of the complexity of the analysis of motor oil. And now I hope that I have more good news. I think that I have found what we needed – a GC of Toyota 0w20 oil. As I already mentioned in...