excessive oil usage?

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excessive oil usage?

free2ride
600 km [375 miles], 120 km/h [75 mph], 3/4 litres of oil used.

am I soon in trouble? in trouble now?

btw, this thing rocks! first time I've had it for a good long highway ride and the beast rode nice and smooth . . . and there was lots of power to spare. 45-50 mpg, too!
"The thing about quotes on the Internet is you cannot confirm their validity" - Abraham Lincoln

"Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened." - Winston S. Churchill

Most motorcyclists live more in five minutes than other people do in their entire lives.

when you mix religion with politics you get politics

people say I'm condescending (that means I talk down to people)
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Re: excessive oil usage?

LukeM
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I suggest you find out where the oil is going: it's either leaking out somewhere, or going out the exhaust pipe.  That kind of usage seems a bit high to me. How many miles on the engine?  Any work done on it recently?

Pull the plugs and see if any of them are black and oily looking.  Possible causes are worn valve guides or seals, possibly tired oil rings on the pistons.  Check the exhaust pipes: oil will make the inside of the pipe very black.

It's also possible it's leaking somewhere. Any drips on the garage floor after it's been sitting overnight? Check all around the engine where pieces come together.  Is your chain oily, especially if you haven't lubed it in a while? Oil filter tight enough? Loose bolts anywhere?

Hope this helps.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Re: excessive oil usage?

robs750
In reply to this post by free2ride
That's a lot of oil!

How many miles on the motor?

Sounds like rings and or valve guide seals.
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Re: excessive oil usage?

free2ride
83,000k, no evident leaks.

am afraid of rings.
"The thing about quotes on the Internet is you cannot confirm their validity" - Abraham Lincoln

"Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened." - Winston S. Churchill

Most motorcyclists live more in five minutes than other people do in their entire lives.

when you mix religion with politics you get politics

people say I'm condescending (that means I talk down to people)
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Re: excessive oil usage?

TOOLS1
Administrator
If, you do not have any leaks. Run a compression check. However if those are kilometers, and not miles. It should not need rings yet.
TOOLS
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1976 CB 750-A X 2
1977 CB 750-A X 4
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1976 CB 750 F
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Re: excessive oil usage?

free2ride
yup, kms not miles. I'll do a check.
"The thing about quotes on the Internet is you cannot confirm their validity" - Abraham Lincoln

"Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened." - Winston S. Churchill

Most motorcyclists live more in five minutes than other people do in their entire lives.

when you mix religion with politics you get politics

people say I'm condescending (that means I talk down to people)