[Healeys] Brake Fluid

Editorgary at aol.com Editorgary at aol.com
Fri May 7 14:50:24 MDT 2010


To make the numbering system on brake fluid even more confusing, DOT 5.1 is 
a non-silicone brake fluid, which is compatible with DOT 4 (and DOT 3, 
which I don't think is even sold any more.)

Castrol GT-LMA is rated as DOT 5.1 and is an excellent choice for systems 
that have not been switched to silicone DOT 5 brake fluid. It has excellent 
moisture management and heat tolerance characteristics. 

But please, folks, let's not get started on preferences for silicone versus 
non-silicone fluids. If the car has never had its brake fluid changed, then 
it hasn't had the seals changed either, and should get replacement 
non-silicone (Dot 4 or Dot 5.1) fluid.

Cheers
gary


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