oil consumption


Information and questions on GL1800 Goldwings (2001-Present)
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jinx
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Motorcycle: 2006 gl1800

oil consumption

Postby jinx » Tue Feb 14, 2012 5:19 am



My 2006 wing with 130,000 miles on it has started consuming oil . On my last trip it used about 4 qts. in about 10k miles.
Until the last trip I would not need to add any oil between 5k mile oil changes.Also just before this last trip I switched from
dino oil to Mobile One motorcycle oil, don't know if that has anything to do with it but I can't beleive it would. Haven't done a
compression/leak down test yet but again with only 130,000 miles can't beleive it is the rings.

There is a small weep type leak on top of the right head but not enough for this type of oil loss. No other leaks that I can see, nothing on the
floor of the garage floor. No noticable smoke on start up or while riding.

Dealers service department supects valve seals could be the problem.

Looking for opions / experinences on this. Has anyone had this type of oil consumption on a gl1800 ?

I know to many a qt every 2500 miles is not a problem but the gl nomally should not use that much oil and when you avg. 800 miles a day when
you travel it is a real nucents and needless worry.



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WOJCIECH
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Re: oil consumption

Postby WOJCIECH » Tue Feb 14, 2012 6:50 am

Did it happen that your engine is overheated, it may not have included the cooling fans! then damage the seals of valves (check compression pressure)

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detdrbuzzard
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Re: oil consumption

Postby detdrbuzzard » Tue Feb 14, 2012 7:43 am

some say switching from dino to synthetic oil will cause a leak cause the synt oil has a cleaning effect. don't know myself i'm happy using dino oil
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themainviking
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Re: oil consumption

Postby themainviking » Tue Feb 14, 2012 9:03 am

detdrbuzzard wrote:some say switching from dino to synthetic oil will cause a leak cause the synt oil has a cleaning effect. don't know myself i'm happy using dino oil


Yes, this can happen on high mileage engines that have not had regular oil changes, but not on engines that have only 130K and have been having regular maintenance. The problems are when the engine sludges up from poor oil change regularity, which allows gaskets to dry up. Then the Synth cleans out the crud, exposing dry gaskets to the possibility of leaking past. I do not think this will be your cause.

One thing you may wish to check is the crankcase breather system. If it is not breathing properly, it could be sucking the oil into the combustion chambers.
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jinx
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Re: oil consumption

Postby jinx » Tue Feb 14, 2012 4:59 pm

The leak is not enough to cause the amount of consumption I am getting. The bike has never overheaded.

themainviking I am with you on the breather issue. I guess I will have to just start breaking her down.

Thanks for all the responses.

okstay
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Re: oil consumption

Postby okstay » Tue Feb 14, 2012 9:34 pm

The first thing you want to do is check your breather and make sure it is clear. Also, over the years I have seen many engines use oil when using synthetic oil. Try switching back to dino oil and see if it still uses oil. Very simple test! Good luck.

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Sally
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Re: oil consumption

Postby Sally » Thu Feb 16, 2012 11:34 am

I had this problem with a car. I switched back problem went away. also synt oils will not smoke when burnt. I'm not sure why but I know people and used car dealer that have put synt oil in motors just to unload them. you can't tell at that point if it burn oil.Sally

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jinx
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Re: oil consumption

Postby jinx » Sun Feb 19, 2012 5:02 pm

Ok checked the breather system. It appears to be breathing easily from the crank on both sides. Checked compression and all is well
there to. Range was from 190 lb to 205 lb with a warm engine. Did not check wet compression.
I am starting to believe that it might be the switch to synthetic oil.

At this point I think I will run it a 1000 miles for a bench mark on usage with synthetic and the switch to dino and do the same.
If there isn't much difference I will move on the doing the valve guide seals.

Thanks for everyones help. I will post when I have an update.

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jinx
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Re: oil consumption

Postby jinx » Sat Jan 12, 2013 8:26 pm

Sorry it has been so long but I just found the problem. It is an oil leak at the pulse generator gasket. This gasket is at the top front of
the engine so all the leakage was flowing across the top of the engine to the back. As a result there was no signs of leakage on the floor.
I only found this after I removed the lower cowling to check on a possible coolant leak after changing the coolant.

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themainviking
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Re: oil consumption

Postby themainviking » Sun Jan 13, 2013 7:01 am

Sorry to hear that jinx. That will be a bear to clean up. Is it a very large job to change the gasket? Getting all that oil off the top of the engine won't be fun or easy.
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jinx
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Re: oil consumption

Postby jinx » Mon Jan 14, 2013 7:26 pm

Very messy job. The throttle cables had a 1/16 in of oil crud on them. Removed the gas tank so I could remove the air box.Used lots of hot water, lots of degreaser, and a pressure washer . Looks good from what I can see but you can't see much.

Luckily most of the gasket came off with the cover. I will start installing everything tomorrow.

The amazing thing is you could not see a thing with the lower cowling on and not one drop of oil on the garage floor.And it has been like that
for at least 20,000 miles.

I would strongly suggest to anyone with high oil usage to check this gasket.




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