I guess that I'm lucky then.. I've done numerous high speed runs at WOT for extended periods of time, (of course I'm stock as far as hp goes) I'm talking 140+ mph runs here, and 3 or 4 where I hit the speed governor (highest it's kicked in, according to the speedo is 161, lowest is about 157). On one speed run, I floord it in 6th gear at 60, and held it there till I hit the speed governor (yes that creates a lot of heat) and my engine runs better now than it did the day I bought it.. maybe putting Mobil1 into it at the 500 mile mark, and running Mobil1 since then has something to do with that..