Oil Breakdown?


Information and questions on GL1000 Goldwings (1975-1979)
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portugeezer
Posts: 424
Joined: Sun Feb 13, 2011 3:44 pm
Location: Mchenry, Illinois
Motorcycle: 1976 gl1000
1982 Gl500
1984 Honda Magna V30

Oil Breakdown?

Postby portugeezer » Fri Aug 26, 2011 7:44 pm



So I am home from my trip. The first day I did almost 900 miles in 15 1/2 hrs on my 1976 Goldwing. On the way down as I had mentioned I ran Valvoline Motorcycle oil at close to $5 a quart. I used the 10W 40. When I got about 500 miles into the trip my oil pressure dropped considerably. i checked the oil and it was only a few ounces low. I have owned two Honda Magnas a 1994 750 and a 1984 500. I still have the 500. On the Magna forum most Magna riders swear by Rotella T-6 5W 40. It's full synthetic oil made for diesels but approved for use in bikes. I got some let the Goldwing warm up a bit then drained the Valvoline and it was the consistency of water. I thought maybe gasoline was getting into the crankcase but no gas smell. I ran the Rotella on the way back and had consistent oil pressure of around 50psi all the way back. It also ran a little cooler. I'm considering writing Valvoline a letter as I feel their product failed the extreme test of a long term high speed trip. Any opinions on this? Any oil gurus on this forum who can explain what happened?



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portugeezer
Posts: 424
Joined: Sun Feb 13, 2011 3:44 pm
Location: Mchenry, Illinois
Motorcycle: 1976 gl1000
1982 Gl500
1984 Honda Magna V30

Re: Oil Breakdown?

Postby portugeezer » Fri Aug 26, 2011 7:53 pm

I should also mention that otherwise the trip went well. The bike gave me no trouble. I'm sunburned and saddle sore. The bike is covered with bugs and road grime. The high temp paint on my stock exhaust peeled off in spots so I'll have to redo it. I'm thinking it may be time for some new exhaust gaskets at the end of the season. I have considered going to chrome exhaust but $500 seems a bit pricey and the aftermarket stuff seems cheap. I think I'll just seal the old exhaust back up. I have the slightest leak from my left fork seal and I'm also thinking some new front brake pads wouldn't hurt anything. She will be better than ever next season!

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landisr
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Joined: Tue Jul 28, 2009 12:18 pm
Location: Gilbert, AZ
Motorcycle: 1976 GL1000
1994 GL1500A

Re: Oil Breakdown?

Postby landisr » Tue Aug 30, 2011 9:32 pm

Hi, PG. Glad you had a nice trip. If you don't mind my asking, what brand of header paint did you use. I bought some VHT Hi-temp paint that I plan to use soon, unless there are 'issues' with it... ??

TIA. Ron in MI
Beam me up, Scotty. There's no intelligent life down here.

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portugeezer
Posts: 424
Joined: Sun Feb 13, 2011 3:44 pm
Location: Mchenry, Illinois
Motorcycle: 1976 gl1000
1982 Gl500
1984 Honda Magna V30

Re: Oil Breakdown?

Postby portugeezer » Wed Aug 31, 2011 8:40 am

Nothing too scientific about the header paint. I have tried everything and it all flakes or sluffs off. I bought rustoleum BBQ grill paint in a brush on can. I applied it with a small brush with a rag that was soaked in mineral spirits to wipe off mistakes. Once it's dry start the bike and the paint smokes and bakes on. it goes dull and the brush marks cook out of it. About every thousand miles some sluffs off so I do it again. I look at it as part of a detail job when I poilish my bike. If you find some thing better let me know. the first time I glass bead blasted the exhaust and used a spray on paint. Can't remember the brand name. It lasted only a short time. I tried stove black too. That stuff comes right off. i would like to find something more permanent by the offseason because I'm removing the exhaust and putting on gaskets and paint or i might go with a chrome Mac system

sfruechte
Posts: 193
Joined: Tue Mar 09, 2010 12:53 pm
Location: La Crosse, WI
Motorcycle: 1977 GL1000

Re: Oil Breakdown?

Postby sfruechte » Sat Oct 01, 2011 11:08 pm

I've had good luck with VHT high temperature paints in a spray can, it lasts for years and I usually re-do it when I change the rear tire. There are POR 15 high temperature paints that I will try next time though. POR 15 rust products are considered top of the line by a body professional that I know. I am in the process of using their rust products on the chassis of an old car and so far it is going well and I plan on trying some of their other products as well.
http://www.por15.com/High-Temperature-P ... roducts/8/

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

Re: Oil Breakdown?

Postby Fred Camper » Sun Oct 02, 2011 8:51 pm

portugeezer wrote:So I am home from my trip. The first day I did almost 900 miles in 15 1/2 hrs on my 1976 Goldwing. On the way down as I had mentioned I ran Valvoline Motorcycle oil at close to $5 a quart. I used the 10W 40. When I got about 500 miles into the trip my oil pressure dropped considerably. i checked the oil and it was only a few ounces low. I have owned two Honda Magnas a 1994 750 and a 1984 500. I still have the 500. On the Magna forum most Magna riders swear by Rotella T-6 5W 40. It's full synthetic oil made for diesels but approved for use in bikes. I got some let the Goldwing warm up a bit then drained the Valvoline and it was the consistency of water. I thought maybe gasoline was getting into the crankcase but no gas smell. I ran the Rotella on the way back and had consistent oil pressure of around 50psi all the way back. It also ran a little cooler. Any oil gurus on this forum who can explain what happened?


As you may know, Early GL's are known for leaky carbs, so if you do not shut off the petcock the carb float seals allow the carbs to drain into the cylinders and on to the crankcase. So maybe that is what thinned your oil. I have never been able to smell "gas" in oil so exposed, but the missing clue is that you were low, not high regarding oil level. So if you close the petcock at stops, then no help here, but if not...
I too run Rotella T6 and have been very pleased with the performance.

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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Oil Breakdown?

Postby dingdong » Mon Oct 03, 2011 8:01 am

I don't have an answer on the oil. ??? A lot of us use, take off, Harley Sportster mufflers with great success and they're cheap. I paid $20 for a set of new ones. The headers can be taken to a Powder Coat co. and have a "ceramic" coating put on. Looks like aluminum and it lasts. I did my "76 seven years ago and all still looks great.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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portugeezer
Posts: 424
Joined: Sun Feb 13, 2011 3:44 pm
Location: Mchenry, Illinois
Motorcycle: 1976 gl1000
1982 Gl500
1984 Honda Magna V30

Re: Oil Breakdown?

Postby portugeezer » Tue Oct 04, 2011 8:31 pm

Can you post a few pics of the way you mounted those sportster mufflers? I had a guy at a swapmeet who would sell me a pair for $10 and another at the same meet saying $30. I was interested but wasn't sure if I could make it look like factory. Thanks!!

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portugeezer
Posts: 424
Joined: Sun Feb 13, 2011 3:44 pm
Location: Mchenry, Illinois
Motorcycle: 1976 gl1000
1982 Gl500
1984 Honda Magna V30

Re: Oil Breakdown?

Postby portugeezer » Tue Oct 04, 2011 8:57 pm

I actually have a friend that owns a shop that does powder coating. I wonder if he can do ceramic coatings

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Fewman
Posts: 38
Joined: Wed Sep 29, 2010 7:57 pm
Location: Drake, CO
Motorcycle: '75 GL1000

Re: Oil Breakdown?

Postby Fewman » Wed Oct 05, 2011 6:14 pm

Not to hijack but I would also like to see some pic's on the Harley muffler conversion...I got a line on new Sportster mufflers for $50.

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

Re: Oil Breakdown?

Postby Fred Camper » Wed Oct 05, 2011 7:41 pm

Talk him down, they are too common to command $50. I bought mine for $20 and may have paid too much (they had never been run).



I have more pictures in my gallery over at NGWClub.com
Here are a few more;




And here is how I modified the header to reroute the mufflers (kick them out just a little to clear the swingarm);

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blindmonkey
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Joined: Tue Oct 26, 2010 4:44 pm
Location: Battle Creek Mi
Motorcycle: 1978 Honda Goldwing

Re: Oil Breakdown?

Postby blindmonkey » Wed Nov 02, 2011 6:31 pm

Did the bike overheat at all? Because oil does break down under high temps, I had it happen to my car and the oil pressure dropped after my car overhead due to bad fan relay. I change the oil and it came out like water, put new oil in and pressure went up.

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detdrbuzzard
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Motorcycle: '84 aspencade,'93se
'75750.'79750/9k
'79 750f.'85450sc
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Re: Oil Breakdown?

Postby detdrbuzzard » Thu Nov 03, 2011 8:39 am

i was using castrol t4 10w40 in both wings, its ok if we do a lot of extended rides but seems to break down if we do. a change to 20w50 solved that
'99 ST1100, '93 se
'75 cb750k, '79 cb 750f, '79 cb750 superK
cb 450sc, sunL70
'06 st1300a
.... william

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dingdong
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Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Oil Breakdown?

Postby dingdong » Thu Nov 03, 2011 9:21 am

That's almost exactly how I did my Sportster mufflers and headers. My mufflers came with crossover ports and I did use them. A length of 1 inch rigid conduit fits perfectly. I didn't know at the time that the crossover wasn't needed.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

mk197523
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Location: West Midlands, United Kingdom
Motorcycle: Ducati Multistrada 1200

Re: Oil Breakdown?

Postby mk197523 » Wed Nov 09, 2011 6:58 am

Hello , A lot of us use, take off, Harley Sportster mufflers with great success and they're cheap. I paid $20 for a set of new ones. The headers can be taken to a Powder Coat co. and have a "ceramic" coating put on. Looks like aluminum and it lasts. I did my "76 seven years ago and all still looks great.

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shawnee1952
Posts: 29
Joined: Sat Feb 18, 2012 10:48 am
Location: Lisbon Ohio
Motorcycle: 1977 gl1000
1987 Gl1200 Interstate

Re: Oil Breakdown?

Postby shawnee1952 » Thu Mar 08, 2012 6:17 pm

My first post on here and it is right up my alley. I have worked at a Shell lube blending and packaging plant for over a decade now. My answear man in the lab said that the breakdown may have been caused by the additives settleing to the bottom of the bottle as it sat on the shelf before you bought it. I am glad to hear all the good comments about using the t6-rottela 5w40 as it is what is in my 77 gl. we also are making a 5w50 full synthetic that I am going to run this season when the temps rise. Will post in July or August to let you know what I think. Just a heads up though, do not use the high-milage motor oils (any brand) in any bike with a wet clutch system as they contain friction modifiers that will make your clutch plates useless. there is a link on Shell US website called lube match that can answear any questions about lube oils. Great website by the way. (I mean the goldwingDocs site)

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

Re: Oil Breakdown?

Postby Fred Camper » Thu Mar 08, 2012 7:22 pm

Thanks for the information Shawnee52, good summary.




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