Brake Fluid?

[SS/GN]

I did a search but found nothing but powermaster issues What is a good fluid to use in our cars. I was thinking of changing to a silicone type so if I ever have a leak it won't harm the paint. Any thoughts on this.
Thanks

 

[Daniel PErkins]

To the best of my knowledge--silicone type fluid cannot be used in a power master brake assembly due to the rubber seals would swell and fail. I was working on Buick's technical assistance line back in the grand national hey-day and we never recommended any other fluid other than standard brake fluid. I know it can never be used in any abs system either. Hope that helps. Dp

 

[aminga]

Just change it yearly. You don't have to purge the lines just suck it out of the master cylinder and wipe it clean.

 

[626gn]

I did a search but found nothing but powermaster issues What is a good fluid to use in our cars. I was thinking of changing to a silicone type so if I ever have a leak it won't harm the paint. Any thoughts on this.
Thanks

Assuming you have a Powermaster, as already mentioned, do not use DOT 5 synthetic (silicone) unless you want to ruin the EPDM seals. Stick to dot 3 or 4. Dot 4 has a higher boiling point but needs to be changed more frequently, which all PM owners should be doing anyway. Once or even twice a year should be mandatory.

 

[SS/GN]

I was looking at changing to the DOT 5 because if you get a leak it won't harm the paint. My power masters are sitting on the shelf and both cars are vac assist. Since I posted on here I was looking at other sources and Lamb, Mark Williams and wildwood don't recomend the silicone fluid in there race stuff. Thanks for the input and opinions

 

[aminga]

Cheap Parts store brake fluid has been in the 10's

 

[TurboDave]

You can't go wrong with good DOT 3.