Grey Gunk in the radiator

Discuss everything about Honda GoldWing. Feel free to ask any question related to GoldWing.

Moderators: CYBORG, Oldewing, robin1731, Forum Moderators

Post Reply
User avatar
Easter
True Blue Steel Biker
True Blue Steel Biker
Posts: 2999
Joined: Thu Sep 13, 2012 11:33 am
Location: South of Houston 100 miles

Grey Gunk in the radiator

#1

Post by Easter »

Still sorting and fixing teathing issues with "Goldie the Dumpster Gal". Went for a 175 mile run Saturday in advance of the trip to Luckenbach this weekend. Ran great except for a plugged fuel filter at about mile 150. Know the cause of that, but also found a bit of grey gooey stuff at the neck of the radiator filler. Looked a bit like some kind of stop leak or something --which I do not use!! Ever.

Sorry I didn't get a photo but any ideas? Could oil in the water cause this? Otherwise the coolant looked fine. (50/50 yellow Prestone )
Bikes at present:

83 XL 600r with a 2004 XR650L engine
And a slightly worse for the wear BMW GS adventure bike awaiting repair
83 GL in process :IDTS:
Wangthang
Titanium Member
Titanium Member
Posts: 369
Joined: Fri Jul 28, 2017 5:30 pm
Location: South Carolina

Re: Grey Gunk in the radiator

#2

Post by Wangthang »

I would bet on stop leak. Oil and water don't mix.
1977 Gl 1000
1976 F1 750 SS
1973 Ironhead chopper
2007 Road King
1974 dohc 450 chopper project
1976 Gl 1000 parts bike
600rr parts bike
User avatar
desertrefugee
SUPER BIKER!!!!
SUPER BIKER!!!!
Posts: 3947
Joined: Fri Nov 11, 2011 9:33 pm
Location: Chandler, AZ, USA

Re: Grey Gunk in the radiator

#3

Post by desertrefugee »

Sounds like it could also be Dexcool grunge too.
- Life is not about waiting for the storms to pass. It's about learning to ride in the rain.
User avatar
jdvorchak
Honored Life Member
Honored Life Member
Posts: 5238
Joined: Mon May 25, 2009 8:01 pm
Location: East Alton, IL

Re: Grey Gunk in the radiator

#4

Post by jdvorchak »

+1 on Dexcool gunk. Sop it up with a paper towel. Eventually it will all come out.
New users please visit our "Shop Talk" for common tips and help:
http://ngwclub.com/forum/page/ST


Don't fix it 'til it's broke...
The person with the most toys wins!
If it has wheels or a skirt you can't afford it.
Amateur Radio Station WW9L

71 CL350 with Bingham side car
2021 HD Triglide
2008 HD Dyna Low Rider
83 KZ1100L1 Son totaled it
83 KZ550LTD Shaft sold

Previous bikes: 84 GL1200 STD, 83 KZ550LTD, 83 CB1000, 78 CB400A, 82 CB900F, 79 CB750K, 2001 GL1800, 2000 Dyna Super Glide, 1972 CB350 K4, 1985 GL1200A, 1997 1200 Sportster, 84 GL1200I, 82 Honda CM400E, 81 Suzuki GS650L, 72 Triumph Bonneville 750, 72 Honda CB350, 66(?) Honda 305 Scrambler, 6? Yamaha yz250, 62 650 Matchless (Norton-Villers).
John
Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “GoldWing Tech Discussions”