I installed DOT 5 in my first D about 19 years ago when I converted my car from automatic to manual. The car sat for about 8 years with the DOT 5 in the system before I got the car out of storage, re-did the fuel system and started driving it again. Last year, 5 years after bringing the car out of storage and driving with the same DOT 5 fluid, I drained the system, disassembled the brakes and clutch and was amazed at the good condition of the fluid, cylinders and seals. A year ago, the brake master cylinder developed an occasional drip which ultimately led to my adding a little fluid. I may have replaced the clutch slave when I removed the car from storage and installed a new Centerforce clutch as a preventative nature so this component may not have had the long term results. I have also used the silicone brake fluid in surge brakes on boat trailers and after years of trouble-free results, wonder why anyone would use anything but DOT 5 in this application. Recently, I re-did the brakes on my "new to me" D that had been sitting for 6-7 years with DOT 4 before I bought the car and re-did the brakes. The fluid looked like a cement mixer drink tastes going down and a couple of the flexible lines were so plugged they could not be unplugged with 140 psi air. What a contrast to my DOT 5 storage experience! I have not noticed any difference in performance between the two fluids, but for reliable, long-term braking performance, I'll stick to DOT 5. Woody __________________________________ Celebrate Yahoo!'s 10th Birthday! Yahoo! Netrospective: 100 Moments of the Web http://birthday.yahoo.com/netrospective/ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/