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Author Topic: muck on oil filter cap  (Read 5964 times)

Offline cosmouser

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muck on oil filter cap
« on: October 31, 2014, 12:23:29 PM »
I changed my oil about 300 or so miles ago and haven't had any leaks or noticed any drips. Yesterday, though, I found this mucky buildup on the oil filter cap. I feel like if it was a leak it would be dripping and not just hanging out all over.. what do you guys think is going on?
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1990 K75C

Offline Zipster

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Re: muck on oil filter cap
« Reply #1 on: October 31, 2014, 12:49:04 PM »
I have a similar issue. I just reckoned it was a little weep of oil that got splashed with road dirt so stuck around rather than drip away. I'm not sure that's its a big issue as long as you keep an eye on the oil sight glass.
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  • Northern Ireland
  • 1996 K1100 LT SE - sold with 104,500 miles in 2015; 2001 R1150RT - 68,000 miles; 2013 Triumph Trophy SE - 50,000 miles; 2007 Harley Ultra Classic - 50,000 miles (Canada bike for stateside use only)
Add life to your days, not days to your life!

Offline cosmouser

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Re: muck on oil filter cap
« Reply #2 on: October 31, 2014, 12:54:00 PM »
Cool, yeah that sounds right.  :idea2:
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1990 K75C

Offline Jumpin Jimmy B

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Re: muck on oil filter cap
« Reply #3 on: October 31, 2014, 02:57:52 PM »
 Oil weep.

Did you replace or reuse the O ring on the oil pan cover?

 Not a huge issue, just messy.
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I'd rather be riding.

Offline cosmouser

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Re: muck on oil filter cap
« Reply #4 on: October 31, 2014, 03:16:05 PM »
I wiped it clean as I could then put it back on. 
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1990 K75C

Offline Chaos

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Re: muck on oil filter cap
« Reply #5 on: October 31, 2014, 05:33:06 PM »
Check the O-ring for a flat edge.  If so  it's time to replace it.  Little bit of grime is nothing to worry about. 
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
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Offline Jumpin Jimmy B

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Re: muck on oil filter cap
« Reply #6 on: October 31, 2014, 05:45:25 PM »
 Yeah, might be time to replace that O ring.  You only get so many cycles of use. Takes the smallest amount of grit or grime to make it weep oil.

 I know, been there, done that.
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Offline Texbid

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Re: muck on oil filter cap
« Reply #7 on: January 16, 2015, 03:21:20 AM »
Check the weep hole on the water/oil pump. If there is oil coming out of it you oil side seal is dead and has been letting oil into the airgap between the oil side and the water side seal. The seal replacement is an easy job. Watch the videos on youtube.
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Offline 552255

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Re: muck on oil filter cap
« Reply #8 on: January 17, 2015, 11:04:56 AM »
Quote from: Texbid on January 16, 2015, 03:21:20 AM
Check the weep hole on the water/oil pump. If there is oil coming out of it you oil side seal is dead and has been letting oil into the airgap between the oil side and the water side seal. The seal replacement is an easy job. Watch the videos on youtube.
+1

I think it then 'flies' back in airflow, at least thats what mine looks like.  Until it drips onto floor etc. I am not going to fix...wipe off and go fast.
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'97 K1100LT-SE
'96 k1100RS-SE
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