C4 Brake Fluid
Thread Starter
Intermediate
Joined: Feb 2004
Posts: 41
Likes: 0
From: Cromwell CT
C4 Brake Fluid
I need to change the brake fluid on my 91. Can I use a synthetic oil or do I have to stick with the conventional fluid due to it's age? Any suggestions as to what I should use?
Thanks for your help.
Thanks for your help.
Le Mans Master
Joined: Feb 1999
Posts: 6,470
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From: levittown pa. usa Even a bad day with my `Vette, is better than a good day at work
St. Jude Donor '10
Just do a brake flush, & then you can use regular or synthetic. I would not use DOT 5 fluid in your car though. Use DOT 3 or 4. They are polyglycol based. DOT 5 is silicone based & as far as I know, is not compatible with DOT 3 or 4.
Thread Starter
Intermediate
Joined: Feb 2004
Posts: 41
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From: Cromwell CT
Racer
Joined: Mar 2010
Posts: 291
Likes: 1
From: Temecula Cali
Usual rule of thumb on bleeding brakes is to start with the wheel farthest from the master cylinder and work your way to the one that's closest.
But that would be at odds with what was just proposed because the RF is farther from the master cyl than the LF.
Is this a Corvette only thing to bleed LF before RF? Please elaoborate.
But that would be at odds with what was just proposed because the RF is farther from the master cyl than the LF.
Is this a Corvette only thing to bleed LF before RF? Please elaoborate.
Supporting Vendor
Joined: Mar 2008
Posts: 576
Likes: 3
From: Muskegon MI
You can use pretty much anything EXCEPT DOT5 fluid. We always flush with DOT4 because it has some pluses over DOT3, but you can use either. DOT5 is not appropriate for an ABS brake system.
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Racer
Joined: Sep 2008
Posts: 387
Likes: 2
But I would flush first with some cheap DOT 4 - fraction of ATE's price - and then replace that with ATE. Since that ATE is blue you'll see when you get new fluid out.
Racer
Joined: Mar 2010
Posts: 291
Likes: 1
From: Temecula Cali
