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DOT 5.1 Brake Fluid [message #352165]

Thu, 13 February 2020 13:55

rjw

Messages: 697
Registered: September 2005

Karma:

Senior Member

A couple of years ago, I was en-route in our GMC from Reno, NV (attended a wedding there) back home to Troy, MI via Albuquerque, NM. To add fun and excitement to the return trip I decided it would be fun to drive through Death Valley as I had never been there. It was April after all and the young lady at the visitor's center near Lone Pine, California suggested that the drive in a RV would be no trouble in April as trucks do it all the time.

Well the trip down into the valley was way more fun and excitement than I had anticipated. SHE wants no part of that kind of fun in any future trips.

Upon leveling off near sea level the Tire Pressure Monitoring system stated to beep indicating an overheat on the front 2 tires. At the same time I started to lose quite a bit of braking. Good thing we were level and we had a place to pull over and stop. I got out and found that the newly installed 80MM calipers were hot enough to smoke. So I figured the DOT 3 brake fluid had been at or near the fluid's boiling point. After I let things cool, we had normal braking. The rest of the drive through the valley was no problem with brakes but I did have issues with fuel vapor and ignition that I could describe in a later post. But we did make it back home OK.

During a visit to Dave Lenzi last week to pick up some more parts (his basement is like Disney Land), we discussed my lack of brakes on that trip. He suggested among other things that I might want to consider DOT 5.1 fluid as it has much higher boiling temperatures than the DOT 3 I had in my system and was compatible with both DOT 3 and DOT 4 unlike DOT 5.

I am wondering if anyone has an opinion on going to DOT 5.1

Thanks

Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com

Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.

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[Message index]

		DOT 5.1 Brake Fluid By: rjw on Thu, 13 February 2020 13:55
		Re: DOT 5.1 Brake Fluid By: jhbridges on Thu, 13 February 2020 15:14
		Re: [GMCnet] DOT 5.1 Brake Fluid By: James Hupy on Thu, 13 February 2020 15:51
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Emery Stora on Thu, 13 February 2020 17:57
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Mike Kelley on Thu, 13 February 2020 15:43
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Emery Stora on Thu, 13 February 2020 17:41
		Re: DOT 5.1 Brake Fluid By: Ken Burton on Thu, 13 February 2020 18:12
		Re: [GMCnet] DOT 5.1 Brake Fluid By: James Hupy on Thu, 13 February 2020 18:58
		Re: [GMCnet] DOT 5.1 Brake Fluid By: BoboBob13 on Fri, 14 February 2020 03:51
		Re: DOT 5.1 Brake Fluid By: Ken Burton on Sat, 15 February 2020 00:46
		Re: DOT 5.1 Brake Fluid By: Larry on Sat, 15 February 2020 06:58
		Re: [GMCnet] DOT 5.1 Brake Fluid By: jimk on Sat, 15 February 2020 10:28
		Re: DOT 5.1 Brake Fluid By: Ken Burton on Sun, 16 February 2020 03:12
		Re: DOT 5.1 Brake Fluid By: 6cuda6 on Sun, 16 February 2020 07:48
		Re: DOT 5.1 Brake Fluid By: Ken Burton on Sun, 16 February 2020 20:05
		Re: [GMCnet] DOT 5.1 Brake Fluid By: GMC.LES on Sun, 16 February 2020 07:42
		Re: DOT 5.1 Brake Fluid By: JohnL455 on Thu, 13 February 2020 15:17
		Re: DOT 5.1 Brake Fluid By: rjw on Thu, 13 February 2020 16:33
		Re: [GMCnet] DOT 5.1 Brake Fluid By: James Hupy on Thu, 13 February 2020 17:00
		Re: [GMCnet] DOT 5.1 Brake Fluid By: rjw on Thu, 13 February 2020 17:52
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Emery Stora on Thu, 13 February 2020 18:02
		Re: DOT 5.1 Brake Fluid By: kingd on Thu, 13 February 2020 15:37
		Re: DOT 5.1 Brake Fluid By: Scott Nutter on Thu, 13 February 2020 16:01
		Re: [GMCnet] DOT 5.1 Brake Fluid By: sgltrac on Thu, 13 February 2020 16:26
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Emery Stora on Thu, 13 February 2020 17:42
		Re: DOT 5.1 Brake Fluid By: jhbridges on Fri, 14 February 2020 07:58
		Re: DOT 5.1 Brake Fluid By: JohnL455 on Fri, 14 February 2020 08:59
		Re: DOT 5.1 Brake Fluid By: JohnL455 on Sun, 16 February 2020 11:44
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Emery Stora on Sun, 16 February 2020 14:40
		Re: [GMCnet] DOT 5.1 Brake Fluid By: Emery Stora on Sun, 16 February 2020 14:40
		Re: DOT 5.1 Brake Fluid By: JohnL455 on Sun, 16 February 2020 16:57

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