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Gotta leak

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Old Jun 21, 2022 | 12:27 PM
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Default Gotta leak
When I got home Friday from a ride I parked the bike and went into the house, when I went back out to the garage to get a beer I noticed a oil leak along my right bottom of the frame rail, wiped it off and rubbed between my fingers and it seemed like very thin oil, get the flash light out looking around and noticed oil in the black sleeve around my rear brake line, I want to try the dye that is used in motors, primary and tranny, can the dye also be used in a master cylinder?

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Old Jun 21, 2022 | 01:25 PM
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Originally Posted by RK_Classic
When I got home Friday from a ride I parked the bike and went into the house, when I went back out to the garage to get a beer I noticed a oil leak along my right bottom of the frame rail, wiped it off and rubbed between my fingers and it seemed like very thin oil, get the flash light out looking around and noticed oil in the black sleeve around my rear brake line, I want to try the dye that is used in motors, primary and tranny, can the dye also be used in a master cylinder?

rk classic.
Brake fluid has a very distinctive smell and feel. It's not slippery
 
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Old Jun 21, 2022 | 02:07 PM
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It's likely oil dripping from your air cleaner. Check that first.
 
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Old Jun 21, 2022 | 02:19 PM
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See the caveats: https://supercool.ac/product/total-d...se-uv-dye-1oz/
 
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Old Jun 21, 2022 | 11:46 PM
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The ONLY fluid to be put in your brake system is the proper brake fluid. No additives at all. Your life and happiness depends on your brakes working as they should.
 
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Old Jun 21, 2022 | 11:54 PM
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Originally Posted by Musician
The ONLY fluid to be put in your brake system is the proper brake fluid. No additives at all. Your life and happiness depends on your brakes working as they should.
If your RK has anti lock brakes no way do you want to add anything to the system. The anti lock module is very expensive! as mentioned death can be a trade off! Filter does leak if not cleaned regularly. Lots of brake clean and a hose then re assess
 
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Old Jun 22, 2022 | 07:11 AM
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Thanks all for your reply's, it just baffles me its only on the frame rail, that why I'm thinking the hard brake line is the culprit, gonna clean it all up take if for a ride then inspect, was just thinking dye would pin point the leak for me.

rk classic.
 
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Old Jun 22, 2022 | 07:31 AM
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Originally Posted by RK_Classic
Thanks all for your reply's, it just baffles me its only on the frame rail, that why I'm thinking the hard brake line is the culprit, gonna clean it all up take if for a ride then inspect, was just thinking dye would pin point the leak for me.

rk classic.
Do it the oposiite way, put the dye in your engine oil. If you hit it with a light and it doesn't glow then you know it's your brake line or if it glows then you know it's engine oil and will be able to trace it back to the source..
 
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Old Jun 22, 2022 | 08:21 AM
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I just replaced the clutch cable on my 02 because it was leaking transmission fluid and running down the cable and showing up right where your leak is showing up.
 
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Old Jun 22, 2022 | 10:43 AM
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As previously stated brake fluid feels different and smells entirely different from oil so there's no need for dye. As an additional check, if it's leaked much brake fluid at all the master cylinder will be noticeably low since it doesn't hold much volume.

If you use gear oil in transmission that will also smell very different from engine oil, making it relatively easy to distinguish which is leaking.

Before you go any further I'd check the bracket on the bottom of transmission cover to see if the bolts holding it have loosened up and started leaking oil out of the transmission, which is pretty common and will end up on frame rail.
 
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