So for the first time, amazingly, I have screwed up on the RX-7. I mixed some dot 4 fluid with dot 5. NOT dot 5.1. So the silicone and glycol are not mixing. There is no air in the lines but the dot5 from what I have read is just crap. Overly compressible and it shows in the pedal. So I bought some ate super blue dot 4 and am wanting to know if anyone has any tips on getting all of the old fluid.

I am not 100% against having to pull all of the lines, abs motor and calipers but would absolutely love to not have to do that. Anyone have any ideas?

 

Not sure if you would have to pull all of the lines vs just keep flushing fluid out again and again to minimize how much residual wrong fluid you have.

 

What he said just keep bleeding each wheel until all you get is super blue, not sure why u put dot 5 in there in the first place since it is meant for non-abs cars, that is why it feels spongy, dot 5 is very prone to aeration caused by the abs unit

 

I usually research everything I do to the car but just like transmission fluid I figured dot 5 was better than dot 3. A fail assumption to make.

 

Bleed every caliper until the stuff coming out looks brand new. It will take a lot of brake fluid, but it gets the job done.

 

I think I'll disassemble all of the calipers, ABS , clutch and brake master then flush the lines while disconnected with cheap DOT3 and then fill with the ATE DOT 4.

 

Just do what others have said above and flush with new fluid.

If you take everything apart it will be a bitch to bleed all the air out of the system.

Jack

 

^this man speaks the truth.

 

And plus if you take everything apart you have a much higher chance for leaks or you may screw up the reassembly of some component.

 

Fair enough guys. Thanks for the input.

 

As long as it is only brake fluids mixed, you should be fine.

My previous Miata had who-knows-what dumped in the Master Cylinder (Someone else did this). The seals finally swelled to the point that the car wouldn't move because the brakes were all locked.

That was a complete Brake R&R, except for the hard lines - be glad it was only the wrong brake fluid you have to deal with.

 

3/4 of a gallon later.....It's looking good again. Now if the damn clutch MC would bleed properly...