Anti-seize compound.... in an engine?

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The Dirty South
Several people on a motorcycle forum are advocating the use of anti-seize as a gasket dressing on the valve cover. Supposedly, it's just the ticket for preventing material transfer and promoting the future re-use of the gasket. My concern is with the metal particles floating around in the engine. Solids found in Permatex anti-seize compound include copper, aluminum, and graphite. I wavered for a while and finally chose to use it on my own gasket. I ran the engine for about 5 minutes and then immediately drained the 2500-mile oil. I could easily see the metallic glitter in the old oil and I'm starting to have regrets about using this stuff on my gasket. What do you guys think? Should I re-fill with a cheap oil, run it for a few more minutes, and drain it again? Copper, alu, and graphite are all pretty soft, but so is the aluminum head (which uses no bearing inserts). RM <-- feeling a little dumb today
 

Patman

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I think that would be a good idea to put in the cheap oil, drive around the block and then change it again. Never can be too safe, I wouldn't feel comfortable after seeing that stuff in the oil.
 

MolaKule

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Some anti-seize compunds also contain 1 um to 10 um glass particles, aka silica. While the copper, graphite, and aluminum probably won't harm anything, the glass sure will.
 
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Oklahoma
Some of the metals you saw could have been from the clutch plates depending on how they are made.Do you think that the filter might be getting bypassed from a relief valve in some way? I use Gaskacinch when I want to reuse a gasket,depends on the material though.
 

richard612

Thread starter
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The Dirty South
I think I'll do that. I'll waste $4.00 worth of oil but it'll help me sleep better at night. This damned composite gasket is $26 and it's generally not kept in stock locally. I wish they'd went with neoprene - my other bike has one and I've re-used it five times. I think it's safe to say that I can ignore the copper and aluminum numbers on my next oil analysis report. RM PS. Any thoughts on what I can use as a gasket dressing that will enable it to be re-used? I thought about using some kind of high-temp grease, or maybe engine assembly lube. [ August 27, 2002, 12:53 PM: Message edited by: richard612 ]
 

richard612

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The Dirty South
Funny you mention that... I've always been a strong advocate of Hylomar for just these reasons, but it let me down this last time. It tacked-up enough to allow for a rather significant amount of material transfer from the gasket to the mating surfaces (mostly the engine block). Hylomar has worked great for me everywhere else. MoleKule - The MSDS indicates: 1. DISTILLATES (PETROLEUM), HYDROTREATED HEAVY NAPHTHENIC 2. ALUMINIUM POWDER (PYROPHORIC) 3. GRAPHITE 4. MINERAL OIL 5. NAPHTHA (PETROLEUM), HYDROTREATED HEAVY 6. COPPER 7. LITHIUM SOAP
 

MolaKule

Staff member
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richard612, Looks pretty clean and I wouldn't be too concerned with this stuff. It might skew your oil analysis a bit toward copper, aluminum, and solids.
 

richard612

Thread starter
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136
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The Dirty South
Just ran 50 miles with a cheapo $1/qt oil and drained it again. There was even more glitter in the oil this time around. I think next time I'll try using a moly engine assembly lube on the gasket...
 
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