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Tractor Talk Discussion Forum

Brake fluid

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37 chief

04-05-2007 18:13:49




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I am doing a rear brake job on my 54 Chevy 1 1/2 ton truck. All the wheel cylinders (4) were rusted and leaking. If I change to silicone fluid will this stop this rusting problem in the future. Has any one changed from Dot 3 to silicone fluid? If I don't get all the Dot 3 fluid out will the silicone mix with it? Stan




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Mike M

04-06-2007 04:41:59




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 Re: Brake fluid in reply to 37 chief, 04-05-2007 18:13:49  
I changed dads 1981 F350 over to silicone fluid a long time ago.I did a 1983 Chevy too. No problems. Some brake work was done ,but not all. I just bleed until the new fluid came out clean. It was easy to spot as it is purple when new. I think my bottle says it will mix. I buy mine from Meuskegon ( sp? ) brake out of Michigan. I can get a gallon for about what the locals want for a quart. They also deal with Corvette parts. Try a google and see if you can find them. I think my bottle has a phone number I can get later on.

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James22

04-06-2007 08:54:27




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 Re: Brake fluid in reply to Mike M, 04-06-2007 04:41:59  
Yes, you can do it this way, but you will not get the benefits. A study was done years ago which showed you needed to remove all traces of the Dot 3 fluid if you wanted to utilize the non-moisture absorbing properties of a silicone fluid. I believe this study was funded by the military. Obviously your decision, but it convinced me that it was a waste of money and instead I just bleed my occasionally.

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BLinWMi

04-06-2007 07:45:18




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 Muskegon Brake in reply to Mike M, 04-06-2007 04:41:59  
I am just about 15 miles from Muskegon, the Brake shop is on Getty street. I can get someone a number if the need it.



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James22

04-05-2007 19:08:15




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 Re: Brake fluid in reply to 37 chief, 04-05-2007 18:13:49  
Stumpalump is correct. To get any good out of silicone you would need to flush the entire system with denatured alcohol to get out any Dot 3 stuff, while praying it doesn't affect any rubber elements. Best plan is to replace everything and use silicone, which will eliminate rusting. Alternative is to put in new Dot 3 every couple of years and fully bleed thru the system. Easy to see the new fluid when it starts coming out the wheel cylinder bleed screws.

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Stumpalump

04-05-2007 18:24:10




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 Re: Brake fluid in reply to 37 chief, 04-05-2007 18:13:49  
Don't do it. The only good time to do it is if everthing including the lines are new.



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