I drove it to redline a few times just like I was told to do so by jeff at maztech. He said do not baby this engine for it should be driven a lil hard everyonce in awhile. I was also reading on some forums that if they sit to long or driven only to shift points than there is a good chance of building up alot of carbon and leading to detonation. Again its a fd i didnt have it to 7500 rpm everytime but at least once or twice a week. A stock rotay fd making it 12yrs without being changed seems great to me. All i did was added a megan racing downpipe and exhaust and KABLAM BATMAN that sucker took a shit after a couple of months. Oh well this is the life of the waco. Opps I mean wankel.