My TS V6 has done 250 000km and the yellow fluid in the ABS reservoir is at the lOW mark. The brake fluid I use in the normal reservoir is bluish (Mobil), so obviously the 2 lots of brake fluid stay separate. The ABS reservoir has a cap, which reads "use only DOT 3 brake fluid". Mitsubishi Australia Workshop Manual tells one never to top up the ABS reservoir, but to replace the unit. The specificied fluid for the normal brake reservoir is DOT 4. Has anyone ever topped up the ABS reservoir and what fluid did you use? I am thinking of sucking out most of the fluid in the ABS reservoir and filling up with fluid as close to the original factory fill as I can get (anyone know what brand Mitsu used?)
Why would Mitsu specify DOT 3 for the ABS reservoir???

just use dot 4

DOT specs are backward compatible - you can use DOT4 to replace DOT3 (but not viceversa).

You should be flushing your brakefluid regularly... at least a full change every 2 yrs?

Im using Dot5 in my brake system.

What is a ABS reservoir? I havent looked closely but I thought we only had a brake master cylinder under the bonnet but please someone tell me if wrong!:confused:

What is a ABS reservoir? I havent looked closely but I thought we only had a brake master cylinder under the bonnet but please someone tell me if wrong!:confused:

:stoopid: My car comes with ABS as well.

Im using Dot5 in my brake system.

Bet it works really well on all the track days you do?

Im using Dot5 in my brake system.

DOT5 is NOT compatible with your car, as it is a silicon based fluid which will eat through your brake system seals. Now that you've used it, there is very little chance of being able to flush it all out, and will require replacement of the whole brake hydraulic system.

I'm using DOT5.1 which has similar high-temperature qualities, and is an ester-based fluid which is backwards compatible with our cars.

yeah, silicone brake fluid must only be installed in a newly-rebuilt-for-silicone hydraulic system. It won't actually "eat your rubber" but it will react badly to any old ester fluid and usually swells any rubber seals that have touched ester previously.

Silicone fluid has it advantages, like its not hygroscopic so it doens't need regular renewal. It won't hurt your paintwork if spilled either. Its great stuff for classic car owners who've just fully restored their cars which get garaged most of the time.

soz, 5.1 had a look at the bottle after i posted it. bought it from phillcom rally when i put slots on my car.