Is this DOT 3 or DOT 5?

[zeisshensoldt]

Picture below, a bit of brake fluid from the master cylinder mixed with some water in a jar. The fluid seems to have separated itself from the water. Dot 3 or Dot 5?

 

[kennys@wi.rr.com]

DOT 5 will turn amber after a while. It confuses many people who think it should always be purple but that doesn't last very long at all.

 

[Clay James]

A few months in my remote reservoir and it's starting to change color.

 

[gringeltaube]

DOT 5, no doubt.

G.

 

[porkysplace]

Brake fluid -how to tell which kind you have DOT 3 or DOT 5

 

[zeisshensoldt]

I accidently bent the sides on the brass fitting applying too much force, so now the vent line wont thread into it. Anyone know where a new one can be purchased?

 

[319]

Hardware store should have it. The fitting, not the cap.

 

[kennys@wi.rr.com]

If you still have a common vent for the master cyliner, air pack and fuel tank then now is the time to change them to single use vents. I have seen this common vent cause nothing but problems for people and their brake system. I was fortunate enough to have the military single them out for me with the same vents used on axles. If you need a vent like that oringsandmore.com is the best place I found to get them. So in a way you did yourself a favor. Just my pennys rubbing together.

 

[zeisshensoldt]

Where can I buy a new master cylinder filler cap? I've already looked at TNJ, Eriks and Easternsurplus.

 

[steelandcanvas]

Where can I buy a new master cylinder filler cap? I've already looked at TNJ, Eriks and Easternsurplus.

Try Jay at Saturn Surplus.

 

[zeisshensoldt]

Hm, doesn't look like they have one either.

 

[doghead]

You posted a picture of your cap. Why do you need a new one?

 

[steelandcanvas]

Hm, doesn't look like they have one either.

Call him tomorrow, some things don't make the list on the website.
(717) 692-9400

 

[Truckoholic]

I've got a one gallon bottle of Dot 5 that I bought, and it is funny, because the bottle was a translucent white color, but the purple color has stained the bottle from where the top of the fluid was down. But the fluid inside, is yellow now, so it is kind of a surprise to pour it out expecting purple, and to get yellow instead.

 

[zeisshensoldt]

You posted a picture of your cap. Why do you need a new one?

Because the brass vent fitting is stuck in the cap and is now mutilated due to me trying to loosen it.

 

[doghead]

So drill it out and re-tap it(with the correct drill and tap size). The brass fitting should be available locally at any NAPA or whatever you have nearby.

 

[Truckoholic]

Because the brass vent fitting is stuck in the cap and is now mutilated due to me trying to loosen it.

Yeah, I had a heck of a time getting mine out! I had to turn the cap upside down, smash the vent in my vice, and use a wrench on the cap to unthread it.

 

[zeisshensoldt]

Yeah, I had a heck of a time getting mine out! I had to turn the cap upside down, smash the vent in my vice, and use a wrench on the cap to unthread it.

That's a he|| of an idea. Now I need to find a vice!

 

[doghead]

update?

We can all use this thread in the future, if you update it with how you fixed the problem.

 

[zeisshensoldt]

I used vise grips on the 1/8 vent fitting. I clamped them as much as I could, then used the pioneer rack to hold the grips while I turned the mc cap with a wrench.