Brake fluid. Can Synthetic DOT 3 be mixed with conventional DOT 3 fluid?

[fullmetaljacket]

Brain fart moment in remembering if these two fluids can coincide and be friendly with each other?

 

[pnora]

All dot 3,4,5.1 are synthetic. Dot 5 is silicone.

 

[fullmetaljacket]

All dot 3,4,5.1 are synthetic. Dot 5 is silicone.

That's odd. These older bottles don't state that they're synthetic.

 

[RemCharger]

Dot 3 is dot 3. And mixes with dot 4.

 

[fullmetaljacket]

Dot 3 is dot 3. And mixes with dot 4.

Correct, but my car has DOT 3 fluid from bottles that do not state that they are synthetic. They were older fluids.
I just bought two new bottles of Prestone DOT 3 brake fluid and the bottles state "Synthetic"
Just wanna make sure I don't screw something up.

 

[pnora]

That's odd. These older bottles don't state that they're synthetic.

https://bobistheoilguy.com/forums/threads/dot-3-regular-brake-fliud-or-dot-3-synthetic.158663/

 

[Kern Dog]

Brain fart moment in remembering if these two fluids can coincide and be friendly with each other?

Can Synthetic DOT 3 be mixed with conventional DOT 3 fluid?​

This is an excellent question and it deserves a more detailed response.
I wish that I had one.
I have bottles at home....

I don't have pictures on hand of older stuff. I do clearly remember though that the word "synthetic" is not on the face of the bottle.

 

[j-c-c-62]

That's odd. These older bottles don't state that they're synthetic

And most people also don't go around saying they are straight, to add a little color to this dilemma, and give a worthy analogy IMO.
I discovered this only in the last 20? years, and that BF has been synthetic for almost my entire lifetime, it's only the recent marketing perk of simply mentioning synthetic has the issue come to the forefront.

 

[PurpleBeeper]

And most people also don't go around saying they are straight, to add a little color to this dilemma, and give a worthy analogy IMO.
I discovered this only in the last 20? years, and that BF has been synthetic for almost my entire lifetime, it's only the recent marketing perk of simply mentioning synthetic has the issue come to the forefront.

Correct! All brake fluid is synthetic. There are no "brake fluid wells" to drill for "conventional" brake fluid.

 

[Kern Dog]

and that BF has been synthetic for almost my entire lifetime,

Uhhh, By BF do you mean brake fluid or your boy friend?

You did bring the context of NOT being straight to the topic....

 

[fullmetaljacket]

Uhhh, By BF do you mean brake fluid or your boy friend?

You did bring the context of NOT being straight to the topic....

View attachment 1653192

You guys are crazy. LOL Thanks for the word.

 

[j-c-c-62]

Uhhh, By BF do you mean brake fluid or your boy friend?

You did bring the context of NOT being straight to the topic....

View attachment 1653192

It was internet bait, don't fret, most I expect are not secure enough to even broach the subject, which was, to repeat, most do not feel the need to mention they are straight, and I will follow my own beliefs on the topic, that I only use synthetic BF.

 

[Fran Blacker]

Brake fluid isn't expensive. When in doubt flush it out.

 

[j-c-c-62]

Anybody here remember DOT 1 BF?

Edit: a trick question somewhat I expect, in that there likely never was DOT 1 BF until they came out with DOT 2

 

[Fran Blacker]

Guys annoying

 

[Bird 426]

Just do not mix the silicone 5 with any 3 or 4 regular brake fluid. I like the 5, hate seeing peeling paint on the firewall after you find that the rear seal let go in the master cyl.

 

[j-c-c-62]

Guys annoying

I bet he could sell pillows though.

 

[fullmetaljacket]

I bet he could sell pillows though.

or wigs along with timeshares. LOL.

 

[Kern Dog]

Brake fluid isn't expensive. When in doubt flush it out.

HA !, The heck it is...The DOT 5 I use is $40 a quart!

 

[Fran Blacker]

HA !, The heck it is...The DOT 5 I use is $40 a quart!

Yea that isn't cheap, never bought DOT 5. Had wheel cylinders done, brass sleeved and in the box they came back tn a note said "Use only DOT 3".