Purchased two 16oz bottles of official DOT3 brake fluids ACDelco brand from pep shop boys (the GM parts no matched). Siphoned 16 oz out of reservoir, and it looked EXACTLY like coca cola. Put 16 oz new in. Drove a bit. Took 16 oz out (still looked exactly like coca cola although a tiny bit lighter). Put 16 oz new in. Car has 96k miles never had a brake fluid change.