Brake Fluid
Cruiser
Joined: Aug 2016
Posts: 181
Likes: 44
From: Toronto, Ontario
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.
Last edited by Road Gliderman; Jun 27, 2018 at 12:44 PM.
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Seasoned HDF Member
Joined: Oct 2012
Posts: 11,198
Likes: 3,027
From: St.Louis Mo.
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.
Outstanding HDF Member
Joined: May 2015
Posts: 2,172
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From: Georgia
Just because two products may meet the minimum requirements doesn't preclude one exceeding, maybe even greatly exceeding, those minimum requirements.
Outstanding HDF Member
Joined: Oct 2016
Posts: 2,530
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From: Wayne County, PA
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.
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Seasoned HDF Member
Joined: Sep 2008
Posts: 14,050
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From: San Diego, CA
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...
Ultimate HDF Member
Joined: Oct 2011
Posts: 5,691
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From: Olean, NY
Yeah I noticed that when I was there and they had a lot of it in their own branded bottles. It was much cheaper than the Brembo, but for $11 I figured it was a safer bet to get straight Dot 4 from the same company that made the calipers on the bike. I had actually bought two bottles but one was more than enough.