Well like I said, I drove it that way from the mid to late 1990s until 2017. At the time I needed it and that's all the parts store could get in. Driven everything but road courses. That's when I started looking seriously for the big resevoir. Road courses can use up brake pads so I wanted to be covered. Thats when the fluid goes down. (The pistons move out further) . Turns out the brakes pads were hardly used at all on that track - but that was as much a nature of the event and course as the brakes. I have no regrets about getting the proper master. But yes dont feel rushed.