Nader Fotouhi

The original post says ATE blue and OEM brake fluid, not ATE blue and ATE Type 200 which only differ in the blue dye. The tech's comment begs the question, what is Porsche OEM brake fluid? Given that ATE can be used on the street and track, why is there a need to switch back.

JasonAndreas

For the 964 it was ATE Type 200 and for the 993/996 it was Super DOT 4. I don't know if the original fill was changed for the 997.

mhm993

Nader, IIRC, the OEM yellow stuff is, in fact, ATE 200.

kurt M

From what I have read so far all fluids that are DOT 3 or 4 will mix without problems. This is one of the measures that have to be met for DOT rating. If not they would not be DOT rated.

JasonAndreas

The factory stopped using ATE Type 200 around 1995. Dealerships might have used it after that (there is even documentation from PAG on the miscibility of Type200 and Super DOT 4) but it wasn't purchased from Porsche parts service if they did.

ECS

I am traveling right now but I will check my stock of OEM fluid when I get back. I know it is DOT 4 something....and believe it is the same stuff as was OEMed in my 996GT3.

mdrums

On the ATE blue can I have it says it can be mixed.

mdrums

On the ATE blue can I have it says it can be mixed.
Developed for motorsports, the Super Blue brake fluid is perfect for your daily driven vehicle. With a boiling point of 536 deg. F, and a wet boiling point of 392 deg. F., the Super Blue has excellent resistance to boiling and thermal break down. Super Blue is a DOT 4 brake fluid and fully compatible with the factory’s brake system. Its distinguishable blue color also allows for easy fluid level checks and helps eliminate the chance of being mixed with another inferior brake fluid.

http://www.shotimes.com/SHO3brakefluid.html

spare tire

I just mix a few tablets of tidy bowl blue and regular dot 4 and it is blue and cheaper than super blue

DaveM993

So how is it that you get Super Blue in the first time without mixing it with OEM...sounds like the tech was pullin' someones legs...

mdrums

DaveM993, the reason ATE Super Blue is the color blue is only so that when you are flushing out the old gold fluid you can see the blue color going in and coming out at the other end. ATE Blue or their Gold color fluid has a higher boiling point that the stock Porsche fluid. You will only see the benefit you you so serious DE track days.

Dave, BTW... GO STEELERS!!!!!!!

DaveM993

We'll see if Tomlin is the guy...

anyways I knew the reason for the color...I was just pointing out the problem with the logic of the thread title...if you can never go back to OEM because the mixing of the two causes problems...then how do you get there in the first place...because if its gonna mix with the OEM comin' out...then its also gonna mix with it goin' in.

mdrums

Yep it will mix but you keep pumping it through till it is all blue coming out the other end. ATE Super Blue mixes with the stock fluid no problem.

chrisp

It's good for going from gold to blue. The blue is very noticeable.

For the next fill back to gold (for those that alternate) I find that I use about 2x the amount of fluid to get anywhere near gold again.

I've stopped the blue, gold, blue, gold changes so I don't waste fluid. Color of choice is blue because it's easier to see the fluid level in the reservoir.

techno99

Until the blue permanently stains the reservoir, in which case you can no longer see the fluid.