Synthetic DOT 4 brake fluid

[Ed Kellock]

Disagree.  I've used Valvoline Synth on everything for 5 years.  No problem.
90-100 degree weather here in CO at altitude and road trips to Arizona and
SoCal through the desert.  No problem.
A couple of nice hot track days.  No problem.

In addition to changing fluids, you also flushed the whole system.
Maybe that resolved another issue that you were unaware of.

Ed


On 7/19/06, George Selby <gselby4x4 at earthlink.net> wrote:
>
> At 09:31 PM 7/18/2006, you wrote:
> >Just saw some Prestone IIRC syn DOT 4 at my local
> >FLAPS...good or crap?  Just curious.
>
> IMHO, not good at all.  Once it started getting hot a couple of months ago
> here in Eastern NC, I was having trouble with my brakes locking up in my
> VW
> Jetta.  Got so bad I couldn't drive the car.  I had replaced everything
> brake related in the car within the past couple of years, sometimes twice
> to repair this problem (which only occurs when it is hot.)  I had been
> using the Valvoline Synthetic DOT 4 fluid, as it was the only type of DOT
> 4
> fluid my local FLAPS stocked.  I finally decided to flush the system and
> try regular DOT 4 fluid (obtained at a NAPA) and as soon as I did so, the
> problem disappeared.  So IMHO the synthetic has a problem with heat
> expansion, even though it has a temp rating some 100 degrees higher than
> non-synthetic DOT 4 brake fluid.
>
>
> George Selby
>
>
> _______________________________________________
> quattro mailing list
> quattro at audifans.com
> http://www.audifans.com/mailman/listinfo/quattro
> ---
> Watch this space for ads :)
>