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Best Dot 4 Brake Fluid For Harley

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You should be using dot 5 brake fluid and it is purple when new however the colour can fade near clear if it has been in there for a while. Thanks to everyone for the input.


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The difference between dot 3 and 4 is the boiling point.

Best dot 4 brake fluid for harley. Dot 5 is safer on painted surfaces. Mine is one of them. Dot 3 401ºf 284º f.

You can tell it’s time with a tester or by checking the color of what’s currently in your system. Automotives generally will run dot 3. At least 4 or 5 times, then reassemble with new seals.

#7 · jan 20, 2013. The dot 4 and dot 5.1 brake fluids have a higher heat. They are dot 3, dot 4, and dot 5.1 (for fluids based with polyalkylene glycol ether) and dot 5 (for silicone based fluids).

Question for brake fluid experts.would like to flush brake system and have i pick up some dot 4 synthetic to do the job.anyone see a problem with this fluid or should i stay with dot 4 glycol base fluid as the bike has this from the factory. The apr may vary based on the applicant’s past credit performance and the term of. If the dot 4 brake fluid is not replaced every two years, the abs.

Dot 3&4 will attack paint if spilled. $17.63 (12 new offers) amazon's choice. I personally have never had a problem with dot 3, i have even brought field cars home got them running topped them off and drove them.

This nomenclature calls for dot 3, 4 or 5 fluids, which are classified by temperature range and viscosity. But some years ago the fed's decided to let some manufacturers use designer fluid and call it dot 3/4. Platinum label dot 4 brake fluid platinum label dot 4 brake fluid.

Btw, discount drugmart is selling the synpower fluid for $2.29 a bottle. Not all applicants will qualify. Dot 5 is silicone based fluid, where dot 3 & 4 are glycol based.

Dot 4 is supposed to be a specific formula of fluid. Best thing to do is replace the brake fluid with dot 5 to be sure of what you have as a mix. Their chemical structure inhibits them from ever becoming compatible & as a matter a fact the silicone used in dot 5 can & will attack any rubber component.

For dot 5 brake fluid harley. As dot 4 brake fluid in your harley ages, its chemical properties deteriorate and it absorbs water. Dont mix the two together but otherwise if your resivoirs are polished or chromed then dot4 is the best.

4.49% apr offer is available on used harley‑davidson® motorcycles to high credit tier customers at esb and only for up to a 60 month term. There was a time in the history of automotive production where all brake fluid was created equal, but that is not the case these days. Prior to 2005 most late model harleys used dot 5 or silicone based brake fluid.

Choosing the right brake fluid is as simple as reading the cover of your master cylinder—the manufacturer has the preferred dot (department of transportation) type stamped there. You should always follow the manufacturer recommendation for the brake fluid rating. In between services, you can simply make a quick inspection through the sight glass at the end of the master cylinder to verify correct harley brake fluid level.

This changes the physical properties of the dot 4 brake fluid, which can lead to braking issues such as soft or spongy brakes. As mentioned, dot 4 brake fluid absorbs water. 4.9 out of 5 stars.

The dot 5 is less harmfull to paint and that is the reason its recomended in the early rods.the dot 4 performs better than the 5 in that it has a higher boil point and absorbs water better. If you use dot 5 you can go longer between changes. 2007 ultra classic non abs.

The problem with dot 5 fluid is that it aerates too easily and cannot be used in abs systems because of this. If you cannot find it, know that motorcycles should be filled with either dot 4 or dot 5.1 (not dot 5, which is silicone based, unless it is specified) brake fluid. The silicone based formula offers a more stable viscosity index at extreme temperatures.

Harley's use dot 5, for those above responses. Under this standard is three department of transportation (dot) minimal specifications for brake fluid. That said, unless you have a something that recommends a specific brake fluid use whatever makes you happy.

I don't think you would have any issues with the metals in the caliper, but i wouldn't trust the seals to be reused. Mixing the two can be catastrophic to clean up. Most importantly, the harley brake fluid must be completely flushed and replenished every two years without exception.

In both cases they add lubricant to the fluid. Left unchanged, it could lead to complete brake failure. The dot 4 will not hurt the seals.it will damage any paint it contacts.

Last night i flushed out the old fluid and put on the speedbleeders and the synpower fluid and the brakes are better than before. Dot 3 & dot 4 are gycol based brake fluid & dot 5 is a silicone based fluid. However it is possible that a previous owner has seen fit to replace the brake fluid with dot 4.

For my old scooters i use dot 5, just because it's doesn't draw moisture. Minimal boiling points for these specifications are as follows: By 2007 all models used dot 4.

The three most popular brake fluids are dot 3, dot 4, and dot 5. Completely disassemble the caliper, clean thoroughly with brake cleaner. Each has specific applications and should be carefully selected for your application.

Many harley's went to dot4 in 2006. Toyota and honda come to mind. I use dot 4 in my harley, the new bikes say dot 5 but mine came with dot 4.


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