Well, I just finished swapping out my Rear diff and manual trans fluid (28,000 miles) to RedLine products. Called Z1Motorsports and told them what I was doing. They sent me everything I needed cheaper and faster than I priced it locally! Very helpful staff and super pleased with how freak'n fast it arrived. I bought a $10 siphon from Pep-Boys and it work flawless. The entire process was pretty straight forward. Very pleased. Thanks for the write up again and thanks Z1Motorsports! There were lots of posts/comments on WHICH redline fluids to use. When I called Z1 I asked about the difference and they explained it to me and sent me exactly what I was looking for.