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Car: 2005 Chrysler 300C
Join Date: Aug 2005
Location: Coeur d' Alene, Idaho
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I'm not familiar with Castrol Syn brake fluid, but I don't think it really matters what the brand is. There are basically 3 types of brake fluid; DOT 3, DOT 4, and DOT 5 Silicone. (DOT stands for Department of Transportation). DOT 3 and DOT 4 are compatible with each other and can be mixed, but DOT 4 has a higher boiling point. I do not know the actual tempuratures of each, I apologize. The master cylinder cap should say what Chrysler recommends for the SRT (and what's in there from the factory).
DOT 5 Silicone brake fluid is NOT compatible with the other 2 kinds, and CANNOT be used with ABS brake systems. It is primarily used in street rods and classic cars that get driven very little, since it will not absorb water like regular brake fluid does. It also will not damage paint if spilled. But again you CANNOT use DOT 5 silicone due to the ABS brakes.
Last edited by kevenj; 04-13-2007 at 03:51 PM.