Brake fluid question ..........

[Cruzr Joe]

I have noticed that DOT 4 Brake fluid is getting hard to find, Why??

Can i put DOT4 Synthetic brake fluid in with the fluid that came from the factory???

is the factory fluid regular or synthetic, or do we even know??

Any knowledgeable help would be appreciated.


Cruzr Joe

 

[SpyderJerry]

brake fluid

Yes DOT 4 and 4 synthetic will work togethter and with factory fluid. Do not ever mix or use silicone or DOT 5

 

[Hypurone]

I have noticed that DOT 4 Brake fluid is getting hard to find, Why??
Cruzr Joe

Walmsrt
It's available all over the internet. I Just recently got my Castrol GT DOT 4 from Amazon.... It's on Ebay and many other sites as well. Walmart carries it if you need something locally.... :dontknow:

 

[Chupaca]

Bike shops....

I use motul and get it at the local motorcycle shops...online for sure :thumbup:

 

[SpyderAnn01]

I always seem to need some on a Sunday when I’m in a small town and the auto parts stores are closed. They never seem to carry it at gas stations or truck stops so now I carry some in my trailer.

 

[JayBros]

Advance Auto Parts, Auto Zone and Napa all list plenty of it online and do the usual asking for your location.

 

[SPYD3R]

DOT

i recently changed out the brake fluid in my F3, and used DOT 4 that i bought at WALMARTS.... :thumbup:
Dan P
SPYD3R

 

[KX5062]

I did a ton of research most of which I've forgotten :doorag:. However, some of the takeaways I do remember :thumbup:.

That being there is no such thing as synthetic DOT4. It's just a marketing ploy that the Feds allow through tricks in the language and terminologies. The real difference is whether or not it is rated as LMA, which is "low moisture absorption". There are several brands that are readily available that are rated as DOT4 LMA, which is what is best for our application. DOT4 because of the formula absorbs more moisture than DOT3, which is one of the reasons they use DOT3 and not DOT4 brake fluid in automobiles, trucks, etc.

So, any DOT4 will work just fine, it's just the service/replacement interval will be shorter than recommended. Honestly, if on the road any DOT3 will work just fine in a pinch, it just has a low boiling point, which for 99.99999% of the time and riding conditions will never be an issue.

 

[Easy Rider]

Honestly, if on the road any DOT3 will work just fine in a pinch, it just has a low boiling point, which for 99.99999% of the time and riding conditions will never be an issue.

And even if you don't believe that.......anything that is marked DOT3/DOT4, which I think most of it is these days, will absolutely be fine for topping up.

 

[Highwayman2013]

Can't be that hard to find, I get DOT4 at the local O'Rielly's.

 

[larryd]

Brake Fluid

You would think that as long as Hydraulic Brakes have been around that there would be a BETTER product developed for this market by now???

Since back in the early sixties I've been schooled in hydraulic drum brakes...then hydraulic disc brakes...then air drum brakes...and finally air disc brakes...also ABS hydraulic & air brakes...So I've been around the automotive and truck market all my life...

Do aircraft use hydraulic brakes??? Small & Big aircraft???

larryd

 

[Mad Mac]

You would think that as long as Hydraulic Brakes have been around that there would be a BETTER product developed for this market by now???

Since back in the early sixties I've been schooled in hydraulic drum brakes...then hydraulic disc brakes...then air drum brakes...and finally air disc brakes...also ABS hydraulic & air brakes...So I've been around the automotive and truck market all my life...

Do aircraft use hydraulic brakes??? Small & Big aircraft???

larryd

Hydraulic(small and large), with anti-skid control(large a/c) Mac:doorag: