PVerspeek Posted March 31, 2019 Report Share Posted March 31, 2019 Guys, I have been replacing several parts of the front brakes on my 04 SS, and have to put new brake fluid in. Under the hood, it says Dot3. But I got Dot4 brake fluid... Can I put in Dot4 without a problem, or do you advise Dot3 Brake fluid? Thanks! Pascal Quote Link to comment Share on other sites More sharing options...
TxSilverado361 Posted April 6, 2019 Report Share Posted April 6, 2019 I'm not 100% but I'm pretty sure Dot4 brake fluid is backwards compatible for Dot3, just not the other way around. I believe it's just a better engineered fluid having a higher boiling point and longevity of life compared to Dot3. If there's not any specifics on the bottles, you could always call a GM dealer or two and see what they say. Quote Link to comment Share on other sites More sharing options...
1981evildisco Posted October 20, 2019 Report Share Posted October 20, 2019 In order to change over you’d have to completely swap the fluid. Like use a Tech 2 programmer to push all of it out. Even if it is compatible make sure you change all that stuff out. Quote Link to comment Share on other sites More sharing options...
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