What brake fluid is everyone using ? any dot 4 ? or HD's premium dot 4 ?

 

Im not sure what "premium" means when it comes to brake fluid. Price maybe?lol . I think ANY dot4 fluid would be ok- as long as its fresh. They all have to meet a dot4 specification.

 

I recently had my system flushed by dealer recall and they said premium is a little more water resistant. Not sure if that is true but time will tell. If you have ABS and your bike is one of the problematic ones I would go with the best DOT4 I could get me hands on, once the ABS unit starts acting up you will have to replace it.

 

 

i'm going to do both. some fluid at autozone is dot 3-4. i have a new bottle of dot 4 on the work bench, but it's 4 years old. Don't think i should use it.

 

Just because two products may meet the minimum requirements doesn't preclude one exceeding, maybe even greatly exceeding, those minimum requirements.

 

lol a little more water resistant... harley must think we are stupid or something. Dot 4 is dot 4. It will always be hydroscopic. That must be the same fluid that fixes poorly designed abs units... its magical i tell you!

 

I believe that's Hygroscopic but we do know what you are referring to.

 

This is certainly true. There are some DOT 4 fluids (Motol 600, ATE Type 200) that have higher wet & dry boiling points than the minimum required by DOT 4 classification.

Someone said that a dealer told them the HD Premium absorbed less water. Not saying that it's impossible, but in the DOT 4 fluids I've researched, I've never heard/read of one claiming to be formulated to absorb less water.. HD Premium would be the first.... Sounds like classic MoCo marketing to me...