Tonik Posted September 26, 2015 Report Share Posted September 26, 2015 ...my brake fluid? My first thought was because I use the clutch so much more. But my front brake fluid was darker than the rear...which makes sense I never use the rear...but yet I do...my brakes are linked at about 80/20. Quote Link to comment Share on other sites More sharing options...
2talltim Posted September 26, 2015 Report Share Posted September 26, 2015 Maybe it's subjected to more heat being down by the engine. Can't say i really noticed mine doing that but i bleed mine every year if its dirty or not. Quote Link to comment Share on other sites More sharing options...
motocat12 Posted September 26, 2015 Report Share Posted September 26, 2015 I thought my non pressured reservoir hoses breaking down led to my dark fluid. Does the clutch cycle more/less fluid than the brakes? Quote Link to comment Share on other sites More sharing options...
Tonik Posted September 26, 2015 Author Report Share Posted September 26, 2015 I would think clutch is a lot more....far longer piston travel. Quote Link to comment Share on other sites More sharing options...
smccrory Posted September 26, 2015 Report Share Posted September 26, 2015 Doesn't the darkness mainly come from hose degradation? Quote Link to comment Share on other sites More sharing options...
Bubba Posted September 26, 2015 Report Share Posted September 26, 2015 I think it's mainly a function of how the two systems work. Disc brakes don't 'retract' very much after you apply the brakes, as the pads stay pretty much in place and just skim the surface of the rotor. Your clutch, however, retracts fully after you squeeze the lever because the clutch springs are pushing the actuating rod back. Much greater opportunity to draw dirt and contamination past the seals into the slave cylinder. Plus, yeah, you shift far more frequently than you brake, compounding the number of times you can introduce shit into the system. I've got a car with a hydraulic clutch and it's the same kind of thing. I usually flush, bleed and refresh the brake fluid on my bikes every two years, but I do the clutch reservoir on the car 3-4 times a year. Quote Link to comment Share on other sites More sharing options...
Earache Posted September 26, 2015 Report Share Posted September 26, 2015 (edited) Doesn't the darkness mainly come from hose degradation?Nope - heat. Either from the engine (clutch) or pad / rotor interaction (brakes).And dirt and crap that gets in, too. Edited September 26, 2015 by Earache Quote Link to comment Share on other sites More sharing options...
Tonik Posted September 26, 2015 Author Report Share Posted September 26, 2015 Ok, crud from the pistons fits what I am seeing. Clutch is used far more and travels further. Duals on the front would pull twice as much dirt as the single rear. Quote Link to comment Share on other sites More sharing options...
smccrory Posted September 26, 2015 Report Share Posted September 26, 2015 Nope - heat. Either from the engine (clutch) or pad / rotor interaction (brakes).And dirt and crap that gets in, too. Got it, thanks! Quote Link to comment Share on other sites More sharing options...
Steve Butters Posted September 27, 2015 Report Share Posted September 27, 2015 More darker...... Quote Link to comment Share on other sites More sharing options...
smccrory Posted September 27, 2015 Report Share Posted September 27, 2015 More darker......Kinky bastard [emoji6] Quote Link to comment Share on other sites More sharing options...
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