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Re: Silicone Brake Fluid-DOT 5 [Re: HPMike] #241322 03/07/09 08:36 PM 03/07/09 08:36 PM
Joined: Jun 2003 Posts: 21,407 It's a dry heat gtx6970 Too Many Posts
gtx6970 Too Many Posts Joined: Jun 2003 Posts: 21,407 It's a dry heat	when I did my challenger 340 i used the dot 5 in it with no problems of poor or spongy pedal at all. I'll use it in my next one as well

Re: Silicone Brake Fluid-DOT 5 [Re: HPMike] #241323 03/07/09 09:35 PM 03/07/09 09:35 PM
Joined: Jan 2005 Posts: 8,341 Crook County, ILL Mastershake340 master
Mastershake340 master Joined: Jan 2005 Posts: 8,341 Crook County, ILL	Quote: Quote: whats the best way to flush some of my parts I will be re-using during my resto? The master and wheel cylinders have less than 2000 miles on them. also if I remember the calipers are pretty fresh. Flush them out with alcohol. You can also use some DOT5 to flush it out as well. In response to the original inquiry, you would have to be just plain silly to use anything but silicone in a freshly restored car. I can show you countless photos of beautiful cars that had the paint destroyed by the DOT3. All of the so called maladies?? well, 25 years of using the stuff, never had a single issue. Spongy pedal?? Unless there was trapped air, frankly it's impossible. It will create tiny bubbles if you shake the bottle or really agitate the fluid while bleeding, but normally they will make their way to the top of the master and not cause any issues. MB I'd recommend against using alcohol, it can damage seals, I'd just use some DOT 5 to flush but don't get carried away, even if there is still some traces of regular DOT3/4 in your system it won't cause any problems.

Re: Silicone Brake Fluid-DOT 5 [Re: Mastershake340] #241324 03/08/09 12:17 AM 03/08/09 12:17 AM
Joined: Apr 2005 Posts: 4,918 new berlin wisconsin M Mr T2U master
Mr T2U master M Joined: Apr 2005 Posts: 4,918 new berlin wisconsin	DON'T USE ALCHOL to flush your brake system. all you have to do is remove as much of the old brake fluid in your master with something like a turkey baster or a syringe, i use a syringe meant for cows that a bought at farm and fleet. then pour in DOT 5 in the master them bleed your brakes until you see the DOT 5 bleed out, easy to see because DOT 5 is purple in color. then to be safe bleed the brakes again. if there is some old fluid it will not hurt the DOT 5 fluid. it will make the DOT 5 of poorer quality. when i convert a car over to DOT 5 i usually use 1 quart of the DOT 5 to make sure the old fluid is completely out. perception is 90% of reality

Re: Silicone Brake Fluid-DOT 5 [Re: Mr T2U] #241325 03/08/09 08:25 AM 03/08/09 08:25 AM
Joined: Jan 2006 Posts: 739 Va (for now) FY1TA & 65 Wedge mopar addict
FY1TA & 65 Wedge mopar addict Joined: Jan 2006 Posts: 739 Va (for now)	This place is great..... Thanks for the info guys!

Re: Silicone Brake Fluid-DOT 5 [Re: FY1TA & 65 Wedge] #241326 03/08/09 03:06 PM 03/08/09 03:06 PM
Joined: Jan 2003 Posts: 1,547 Puyallup, Wa. S Steve340 pro stock
Steve340 pro stock S Joined: Jan 2003 Posts: 1,547 Puyallup, Wa.	I have found that the main reason for a spongy pedal is when you install new brake shoes. Until the brake shows "arc" to the same radius as the drum inner surface, your brakes will feel spongy. It usually takes about 5000 miles to get a hard brake pedal. They used to arc the brake shows to the freshly turned drums years ago just for this reason but the EPA made them stop doing it because lot required a machine that would grind of brake shoe material or asbestos into the air. Maybe this is why when a person rebuilds the entire brake system, it feels spongy and they think its the DOT 5 brake fluid that is causing it.

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