Last night I "sharked" my 88 '635, according to TMS, I can run this thing up to 6,800 rpm now, my question is that knowing that the original redline was 6250... is this a smart thing to do with 153,400 miles on it? Is this not considered abuse? Oil leaks blown heads... etc.. I would be pretty upset if I blew the thing up! Any comments/insight is greatly appreciated.. Lee ------------------------------