Originally Posted By: doitmyself
Originally Posted By: Gebo
Well, I guess the guy at Dow was telling me the truth.
Silicone based grease vs Molybdenum based grease. They really aren't even close in formulation. I now remember he did say the AS880N was a much more complex grease.
Thanks for the info!
This is an inaccurate statement. Molybdenum is not a "base", but rather a "solid" boundary lubrication additive. Grease is made up of a base oil( PAO, silicone, mineral oil,etc.), a thickener (lithium, aluminum, etc. type "soap", and then other additives. Molybdenum, teflon, and graphite are all examples of solid type additives.
To my knowledge, M77 is also a silicone base oil grease. Both being discussed here have moly also.
Here is an illustration from a Honda manual recommending M77 for the same shim application:
https://honda.oemdtc.com/Uploads/B96-001-02.jpg
Two companies chose two similar, but different products to achieve the same result. Our OCD mentality then begs to ask: Is it mandatory to use one product over the other for a particular situation? The same goes for using OEM coolants, ATF, etc.. We certainly have no problem using aftermarket brake fluid, engine oil,etc. most of the time. What drives us over the edge in something like this brake application???
I forgot my medication? I do appreciate your concern.
I am specifically addressing certain Toyotas. My point is that M77 is not anything similar to AS880N. The spec sheets illustrated in this thread show no molybdenum in AS880N and about 70% molybdenum in M77. I am a simple man, but it seems to me that if something is made up of 70% molybdenum that molybdenum would qualify as a "base." Seems pretty accurate to me.
I am just reporting info for you to use or discard. That's all. Does this matter at all? Very Little.