Brake Master Cylinder rebuilder?

[Mr70]

Once you guys have your brake Master cylinders or wheel cylinders rebuilt,are you using DOT 3,DOT 4,DOT 5 or DOT 5.1 fluid?
And what does White Post recommend for either one of those re-sleeved as well?
Thanks.

[X66 714]

Originally Posted by Mr70

Once you guys have your brake Master cylinders or wheel cylinders rebuilt,are you using DOT 3,DOT 4,DOT 5 or DOT 5.1 fluid?
And what does White Post recommend for either one of those re-sleeved as well?
Thanks.

Dot 4 is recommended by Mike Gibbons. He says the new style seals don't like Dot 5. He also uses stainless steel instead of brass. The brass is too soft & can scratch easy...Joe

[Big Block Bill]

Originally Posted by Mr70

Once you guys have your brake Master cylinders or wheel cylinders rebuilt, are you using DOT 3,DOT 4,DOT 5 or DOT 5.1 fluid?
And what does White Post recommend for either one of those re-sleeved as well?
Thanks.

*White Post states: We fully guarantee all parts that are sleeved and/or rebuilt by us, with the exception of those used in conjunction with silicone fluid (DOT 5).

*Lone Star Caliper states: DOT 3 or DOT 4 Brake Fluids are compatible with their calipers, but they do NOT recommend DOT 5 as well and will VOID the warranty on any Calipers.

I have used both for over 30 years and only had (1) master cylinder fail internally and that was on the 1979 Trans Am I just sold. Billy at White Post turned it around at no charge in 4 days, Top Notch! You can't go wrong with either Company Bill