coolant looks like milk shake


Information and questions on GL1100 Goldwings (1980-1983)
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1824push
Posts: 3
Joined: Mon Mar 15, 2010 12:11 pm
Location: fort wayne, indiana
Motorcycle: 1980 gl1100 interstate

coolant looks like milk shake

Postby 1824push » Sat Jul 31, 2010 6:13 pm



I have an '80 gl1100 and my coolant looks like a milk shake. I just noticed this. I purchased the bike this spring, put over 7k miles on it, and don't know when the last time the coolant was changed. The bike has over 100k miles on it and has been well taken care of. What could cause this.



cbach1981
Posts: 154
Joined: Sun Mar 14, 2010 9:03 pm
Location: Salem, ME
Motorcycle: 1983 GL1100I Interstate

Re: coolant looks like milk shake

Postby cbach1981 » Sun Aug 01, 2010 7:40 am

ummm... not good.... that's oil in your coolant giving it that look. could be headgasket, or as in the case of my 1996 saturn sedan, cracked head. Hope for the lesser of the two evils.
    You only need two tools in life - wd-40 and duct tape. If it doesn't move and should, use the wd-40. If it shouldn't move and does, use the duct tape!

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thrasherg
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Location: Plano, TX
Motorcycle: 2004 GL1800, 2005 Honda Shadow 750, 2008 Yamaha R6 with RG500 engine, CRF450X, CRF230, CRF250X, XR200, CR500

Re: coolant looks like milk shake

Postby thrasherg » Sun Aug 01, 2010 1:28 pm

As mentioned, you have oil mixed in with the coolant. Usually a failed head gasket causes this, oil feeding up through the cylinders to the cylinder head to lubricate the cams, escapes at a failed head gasket and gets mixed up with the coolant. Sometimes a pressure test can reveal which head gasket has failed (left or right bank) but I would suggest removing both cylinder heads and have a good look. As the bike has done a 100K miles it would be a good idea to drop the valves and recut all the seats and give it a top end overhaul.

Gary
Last edited by thrasherg on Tue Aug 03, 2010 12:14 pm, edited 1 time in total.

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Fred Camper
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Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: coolant looks like milk shake

Postby Fred Camper » Sun Aug 01, 2010 5:43 pm

Could also be exhaust gas in the coolant, but the result is from the same issue, a failed head gasket. So either way, not a minor repair but not in of itself too serious. It is just an issue of why the head gasket failed as that is most often due to a secondary issue.

1824push
Posts: 3
Joined: Mon Mar 15, 2010 12:11 pm
Location: fort wayne, indiana
Motorcycle: 1980 gl1100 interstate

Re: coolant looks like milk shake

Postby 1824push » Tue Aug 03, 2010 6:37 am

I flushed the coolant. The milk shake stuff seemed to be only in the resevoir. The rest of the system was green, used but green. I asked the previous owned when the last time he had flushed the coolant, and he said never. He purchased the bike with 87k miles on it and sold it to me with 100k miles on it. I have put 7k on it in the last 5 months, with a total of 107k on the bike. I think (hope) that this was just the scum at the top of the pond. Rode about 80 miles after the flush/change, and haven't noticed anything wrong yet. I will keep a close eye on it, as I too was thinking blown head gasket, but w/o coolant in the oil, only oil in the coolant. I'll keep my fingers crossed. Thanks

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Fred Camper
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Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: coolant looks like milk shake

Postby Fred Camper » Tue Aug 03, 2010 9:10 am

Ty for the update, let us know what your situation is in another month. Not too unusual to get crud in the reservoir. But since your system was clean then you may be fine now.

goldtr6c
Posts: 147
Joined: Tue May 11, 2010 11:17 am
Location: Hitchcock, Tx
Motorcycle: 1985 GL1200 LTD
1982 GL1100 STD
1976 GL1000 "800lb Canary"

Re: coolant looks like milk shake

Postby goldtr6c » Tue Aug 03, 2010 11:03 am

Sounds like the P/O wasn't real big on routine maintianance. He just rode it. I would go over the whole bike and check things out to be safe. You might ask the P/O if the belts were ever changed for starters.

1824push
Posts: 3
Joined: Mon Mar 15, 2010 12:11 pm
Location: fort wayne, indiana
Motorcycle: 1980 gl1100 interstate

Re: coolant looks like milk shake

Postby 1824push » Tue Aug 03, 2010 1:20 pm

The first thing I did was change the timing belts. I have got a lot of help and information from this site, and timing belts seemed to be the thing to do, and asap. At least the person before the PO did take great care of it. She rides like a dream and looks like it never saw rain. I have replaced brakes, rotors, timing belts, oil, and rode it enough to replace the rear tire. I want to have it around for a while, so I will try to take care of her. This site is the greated too. Jeff

wrichar7
Posts: 26
Joined: Sat Mar 27, 2010 6:23 pm
Location: Fowlerville Michigan
Motorcycle: 1983 GL1100 interstate

Re: coolant looks like milk shake

Postby wrichar7 » Thu Aug 05, 2010 10:11 pm

One way to find out if it has a failed head gasket is pull the sparkplugs out if you have one that is very clean that is were your leak is the coolant will clean the plug and make it look like a new one ... just a idea for you to try good luck.

radioman
Posts: 3
Joined: Fri Aug 21, 2009 11:36 am
Location: baxter Ky.
Motorcycle: 1982 GL1100I Interstate

Re: coolant looks like milk shake

Postby radioman » Tue Aug 10, 2010 10:03 am

you might check the water pump, I think it is possible for oil to get in the coolant through the water pump. pull the cover over it and see if it moves sideways or up and down, it should not move. Radioman




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