Harley knows best
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Road Warrior
Joined: Feb 2007
Posts: 1,785
Likes: 4
From: Oklahoma
Harley knows best
at least this time. \\; HD says to change DOT4 brake fluid every two years. \\; I figured that was overkill. \\; After all, how often do you change it in your cars? \\; But I decided to try it on the rear of my 06EG. \\; With new fluid, the pedal is noticeably firmer. \\; Will be doing the fronts ASAP.
Intermediate
Joined: May 2008
Posts: 46
Likes: 0
RE: Harley knows best
I believe it's hygroscopic. The moisture in the water makes the brakfluid more compressible and therefore the pedal feels a little spongy. It happens so slowly that we don't really notice it until we change the fliud. Changing the fluid every couple of years will also give longer life to calipers.
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Harley knows best
ORIGINAL: felpro52
I believe it's hygroscopic. The moisture in the water makes the brakfluid more compressible and therefore the pedal feels a little spongy. It happens so slowly that we don't really notice it until we change the fliud. Changing the fluid every couple of years will also give longer life to calipers.
I believe it's hygroscopic. The moisture in the water makes the brakfluid more compressible and therefore the pedal feels a little spongy. It happens so slowly that we don't really notice it until we change the fliud. Changing the fluid every couple of years will also give longer life to calipers.
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: Harley knows best
I've had an Actron kit for years and it works great. I originally bought it when I was putting all new brakes on a camaro, but it works great on a bike. No fuss no muss and no mess.
http://www.actron.com/product_detail.php?pid=16292
PS It also works great as a vacuum tester looking for intake hose leaks or testing a vacuum advance unit.
 \\;
PPS That listed price is the manuf. site and it's discounted elsewhere. \\;
http://www.actron.com/product_detail.php?pid=16292
PS It also works great as a vacuum tester looking for intake hose leaks or testing a vacuum advance unit.
 \\;
PPS That listed price is the manuf. site and it's discounted elsewhere. \\;
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Road Warrior
Joined: May 2007
Posts: 1,502
Likes: 0
From: Somewhere in, WA
RE: Harley knows best
Good info to have. I'll be checking into getting mine changed soon.
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