Over 20 years ago I replaced the calipers and master cylinder in my 1970 Vette with SS sleeved parts and silicone Dot 5 brake fluid. I have had to replace one caliper and put in new Dot 5 fluid during that time. My brakes continue to work perfectly.
Recently, to save NCRS deductions, I have had my original master cylinder rebuilt and planned to replace the SS master cylinder and continue to use the Dot 5 fluid. However, when the rebuilt cylinder arrived, the company that did the rebuild had a footnote that said they do not recommend Dot 5 and want me to use Dot 3 to maintain the lifetime warranty. The rebuilt cylinder has a brass sleeve and not SS.
Question: Do I continue to use Dot 5 and risk premature failure of the master cylinder voiding the warranty?
Or: Switch to Dot 3 wondering what happens to the caliper seals that have lived many years in a Dot 5 environment?
I have read the many threads in the NCRS archives on brake fluid and still don't know what to do.
Recently, to save NCRS deductions, I have had my original master cylinder rebuilt and planned to replace the SS master cylinder and continue to use the Dot 5 fluid. However, when the rebuilt cylinder arrived, the company that did the rebuild had a footnote that said they do not recommend Dot 5 and want me to use Dot 3 to maintain the lifetime warranty. The rebuilt cylinder has a brass sleeve and not SS.
Question: Do I continue to use Dot 5 and risk premature failure of the master cylinder voiding the warranty?
Or: Switch to Dot 3 wondering what happens to the caliper seals that have lived many years in a Dot 5 environment?
I have read the many threads in the NCRS archives on brake fluid and still don't know what to do.
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