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Lubricant for gas cap

  • Thread starter Thread starter Killer2600
  • Start date Start date
K

Killer2600

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What's a good lubricant that doesn't turn to crap in the presence of gas or mostly gas fumes. I'm trying to lubricant the latch mechanism so it works smooth and like new. I've tried graphite lock lube thinking a dry lube would be best but after a little rain and humid days it went to crap. Right now, after disassembling the cap and cleaning the graphite remains out, I have white lithium grease from a spray can coating every part. It's been a few days and already the "grease" has been made liquid with just the concentrated fumes. I suspect I may have to find another lube if the white lithium doesn't hold up.

And that brings me to you guys, what lube can or does go in these gas cap latch mechanisms? Surely suzuki had to have some sort of lubricant in it from the get go, so surely something must work.
 
Must be this new gas, I have the same problem on my Harley with the plastic threads on the gas cap. Does it swell the plastic up or what ?
 
Marine grease repells moisture and liquids.
But it tends to eat paint, and doesn't wipe off easily, and it could be risky if it gets into your gas.

What about some general purpose oil?
 
I have never used anything, they all work smoothly.
Maybe it's designed to be used dry?
 
From the link I gave it appears that Silicone based lubes are not soluble in gas or water.
The new seals are slippery and get dry and hard with age.

You might try and soak them in a rubber restorer.
 
Katarat said:
Must be this new gas, I have the same problem on my Harley with the plastic threads on the gas cap. Does it swell the plastic up or what ?
Click to expand...

Not really the same other than it being a gas cap issue but AFAIK plastic doesn't swell.

tkent02 said:
I have never used anything, they all work smoothly.
Maybe it's designed to be used dry?
Click to expand...

Well I've let it get dry on it's own, then I've tried graphite on it, both tries it works like a rusty lock dry.

JEEPRUSTY said:
From the link I gave it appears that Silicone based lubes are not soluble in gas or water.
The new seals are slippery and get dry and hard with age.

You might try and soak them in a rubber restorer.
Click to expand...

I don't have an issue with seals myself so rubber restore won't be of use although I should get a new seal for the cap. Does silicone not break down in the presence of gasoline?

Next time I need to lube this cap I think I'll see where oil gets me.
 
I may have misread the lubricant link.
Hows about dry slide or some sort of graphite powder?
 
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