Since I have started trying to learn about motor oils, I have been reading that "moly causes engine deposits".
The abstract of this paper alludes to this, saying that MoDTC "is also widely known to cause deposit accretion in the Thermo-Oxidation Engine Oil Simulation Test (TEOST 33C)."
http://papers.sae.org/2008-01-2480/
However, I usually see the TEOST "problem" referred to when MoS2 is brought up, and I know that it's likely the compound and not one particular element in it we need to consider.
To make things really confusing, here is a paper that claims that MoDTC can result in reduced deposit levels in the presence of other oil additives...
http://www.savantgroup.com/media/2005-Pa...e-Oils-STLE.pdf
. And, a paper in this book also claims that "molybdenum ion" in oil can reduce deposits and make oil less likely to oxidize when used properly with other additives, but I don't know how ionized molybdenum is introduced to oil. Some key pages here are not visible, sorry.
https://books.google.com/books?id=y7VoYR...ost&f=false
There is probably not a single, easy answer here, but my basic question is whether the presence of MoS2 in oil can lead to increased deposits, and I would also like to understand more about the functions and risks of molybdenum compounds in oil in general.
Help!
EDIT - just want to make it clear that I understand that MoS2 is a solid that works by adhering to metal surfaces experiencing friction...that is not the "deposit" I am thinking of. I am asking about carbon deposits, of course.
The abstract of this paper alludes to this, saying that MoDTC "is also widely known to cause deposit accretion in the Thermo-Oxidation Engine Oil Simulation Test (TEOST 33C)."
http://papers.sae.org/2008-01-2480/
However, I usually see the TEOST "problem" referred to when MoS2 is brought up, and I know that it's likely the compound and not one particular element in it we need to consider.
To make things really confusing, here is a paper that claims that MoDTC can result in reduced deposit levels in the presence of other oil additives...
http://www.savantgroup.com/media/2005-Pa...e-Oils-STLE.pdf
. And, a paper in this book also claims that "molybdenum ion" in oil can reduce deposits and make oil less likely to oxidize when used properly with other additives, but I don't know how ionized molybdenum is introduced to oil. Some key pages here are not visible, sorry.
https://books.google.com/books?id=y7VoYR...ost&f=false
There is probably not a single, easy answer here, but my basic question is whether the presence of MoS2 in oil can lead to increased deposits, and I would also like to understand more about the functions and risks of molybdenum compounds in oil in general.
Help!
EDIT - just want to make it clear that I understand that MoS2 is a solid that works by adhering to metal surfaces experiencing friction...that is not the "deposit" I am thinking of. I am asking about carbon deposits, of course.
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