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| | | Joined: Sep 2019 Posts: 16 1953 3100 5win 325 | | 1953 3100 5win 325 Joined: Sep 2019 Posts: 16 | 1953 3100 with stock brakes
Slow leak identified in the main cylinder. Need to refill the main cylinder with fluid. Any suggestions on what type of fluid I should use?
Thanks... | | | | | Joined: Nov 2014 Posts: 78 'Bolter | | 'Bolter Joined: Nov 2014 Posts: 78 | I am sure this will start a discussion -but I use Dot 3 in my 53 3100
1953 3100
| | | | | Joined: Sep 2013 Posts: 1,361 'Bolter | | 'Bolter Joined: Sep 2013 Posts: 1,361 | Dot 3 is really the only choice. You could use Dot 4, my recollection is it has a higher boil point. Not really an issue for most of us. Dot 5, silicone fluid....you'd need to do a full rebuild, replacing all the rubber seals and o-rings. Then if no moisture ever entered the (should be) sealed system, it'd be good for years, if not decades. But really, Dot 3 is the one.
RonR
RonR
1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5
| | | | | Joined: Mar 2010 Posts: 1,660 Curmudgeon | | Curmudgeon Joined: Mar 2010 Posts: 1,660 | DOT 3 agree.
In case you didn't know and sorry for the preaching:
If the leak is in an original master cylinder then there is no second cylinder typical of today's design.
All your eggs are in one basket. You want to fix the problem ASAP. It's not safe.
Make sure your parking brake is working.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
| | | | | Joined: Feb 2019 Posts: 53 'Bolter | | 'Bolter Joined: Feb 2019 Posts: 53 | Ditto on Dot 3 and more importantly on safety. Upgrade to a dual bowl mastercylinder | | |
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