Oils with high moly damage a catalytic con ?

[Westerly]

very interseted in this if a car burns even a small amount of oil it would coat the catalytic converter right? And how about the O2 sensors they too can be damaged by metals like this correct?

 

[bruce381]

think it is Phos that is problem and unless you burn a lot bruce

 

[bruce381]

should say > greater than
bruce

 

[Pablo]

While lead and to a minor extent phosphorus are poisonous to catalysts, most metals are to be avoided on 02 sensors and catalysts. I doubt some minor consumption with a Mo bearing oil is a huge concern. I would love to see a study, though.

As I recall Ca and Mg in one study torched off and did not poison the cat.

 

[toocrazy2yoo]

From the moly papers here on the site:

Quote:

---

Molybdenum Disulfide is ideal for these high temperature-high pressure applications. MoS2 will survive pressure into the neighborhood of a half million PSI and two thousand degrees F. in an oxygen depleted environment with practically no corrosion and erosion. MoS2 is relatively soft and is not corrosive and non-abrasive.

---

Not sure of the ramifications of that statement as regards the catalytic converter. Might mean it'll pass on through with the gasses of exhaust, OR it might mean that even the cat won't burn it, and the stuff might start to plate the catalyst elements..

Not only do I not know the answer, I'm not even sure of which question to ask!

In any case, here's the Moly