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Hello all, I have a 1996 Skyline r33 GTS-T. This question is a two-parter. Firstly, and more simply, my r33 has GT-R Brembo Brakes. I am buying new pads and rotors. Can I correctly assume that any GTR-Brake/Rotor that was originally compatible with the r33 is going to be the same shape/size, regardless of the model? By that I mean, without knowing exactly what GT-R model these Brembo brakes came from, I can safely buy r33 GT-R sized brake pads and rotors and should be fairly safe in them fitting correctly? My second question is a bit more complex. I do not know if the previous owner put in Glycol-based brake fluid (DOT 4) or Silicone-based brake fluid (DOT 5). I did a test, by extracting some fluid from the reservoir and adding water. The brake fluid and water DID NOT mix, implying it is Silicone-based, but also the brake-fluid isn't purple, which is really throwing me for a loop. So, to be absolutely safe, I've decided instead just carry out a full fluid flush and replace with Glycol-based, especially since I am putting new pads and rotors on anyways. However, I am uncertain as to what the best method would be. I have read that I should use denatured alcohol (methylated spirits) to push the original brake fluid out, then use cheap DOT 3 to flush the system, then put in my proper high quality DOT 4 or DOT 5.1 brake fluid of choice. Is this correct? I've never done this before and want to make sure this is a proper method. I've also read that I should use compressed air to fully flush out the denatured alcohol, but I'm sure I understand how that works? Would I just hook up an air compressor pump to the brake fluid reservoir and open all the bleeder valves? I appreciate any/all advice, links and sources, and information you can provide. Thank you