8 replies to this topic

[Indy Orange]

Hi all, would this be suited to LC with discs and the old style master cylinder ? Ta! Paul.

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[claysummers]

Eminently Paul


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[neglectedtorana]

I use it in my LX with VN master, VN rear calipers and Wilwood calipers.

Don't know about an LC but I like to think there is nothing wrong with that brake fluid or its compatibility 

[dron]

just do not mix dot 3 and dot 4 fluid, they are not all compatable and if you get the wrong combonation it will not be good at all. rebuild the cylinders after cleaning everything out can be the resault.

[Indy Orange]

Cheers for that! point noted Darren.

[Indy Orange]

Oops ! Just realised I typed Bake.

[Heath]

^ Fixed that for you.

 

I have pretty much always run DOT4 on old cars but there are some rubber seals that are supposed to be not compatible with the DOT4 stuff... I don't really know what era they stopped making the rubber seals that really want DOT3 instead.

[dattoman]

3 and 4 are fine 

3 is less viscous... so supposedly flows faster

Hence why Toyota specifies it 

Many cars use it for ABS spec vehicles because of this

 

When we were all young.. DOT3 was for drum brakes and mums taxi

Dot 4 was more "performance" for disc braked cars

Has a slightly higher boiling point

 

Not much of that means anything anymore with better technology the lowliest of low fluid now is probably better than the best Dot 4 you could buy in the 70's

 

 

Now... DOT 5 on the other hand... which is silicone based...never use it

It aerates , compresses and doesn't absorb water... which is bad... cause your brakes do get water in them

And when the brakes get hot... this water will boil off and instant no pedal and big repair bill

Only use it on road tractors (harleys - as it doesn't mess up paint) and slew brakes on cranes

 

Then theirs DOT5.1 - still made of the same lovely DuPont stuff as DOT3+4 ... just higher temp spec again... and low viscosity for ABS vehicles

[Indy Orange]

Thanks Datto , ended up buying 2L of the Bendix Dot 3 stuff .Great info.