"Synthetic" and DOT 5 are not the same thing. There are "synthetic" DOT 4
brake fluids, notably Valvoline. I can't imagine how a synthetic DOT 4 would
harm a DOT 4 system, but I am open to education.
In perhaps the most idiotic decision in the history of bureaucracy, the DOT has
created a designation of DOT 5.(something I can't remember) which is NOT
silicone and NOT compatible with silicone.
While Silicone does not take on water, it surely takes on air bubbles. Not
going there with my Elise. Currently using ATE Blue. My appliance cars are on
DOT 4. I really don't care whether it is GT/LMA, ATE Blue or Valvoline
Synthetic.
uncle jack the Stag was put together by ISOA to run DOT 5 silicone. I have
labeled the reservoirs thus. No reason to change that. The non-paint-eating
is good, and so far I have not had air problems on a car that I don't drive
competitively.
Phil Ethier West Side Saint Paul Minnesota USA
1973 Triumph Stag LE22439UBW "uncle jack", Sapphire Blue
2004 Suburban 8.1, Sport Red, the only automatic of the bunch
2005 Lotus Elise, Bordeaux Red Pearl
2007 Saturn Ion 3 2.4, Berry Red
pethier [at] comcast [dot] net
http://www.flickr.com/photos/pethier
http://www.triumphtransamerica.org.uk
http://www.mnautox.com
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