we have veraciators running over 10,000 hours and running fine....fuel trim issues with yours maybe? or a plugged radiator getting to hot from time to time? currently running over 125 units full time 3 shifts...the only time a engine has been changed when a coolant leak happened and the operator baked it,,,c and d serial#s...yes the mini lever modules needed some repair but it was covered by warranty...and the mlms are holding up well....no steer axle troubles and no mast peening with overweight loads...yes way too many bells and whistles on a lift nowadays but it's all about ergonomics and driver comfort...Crowns major push every time a new model was created since the old sc/rc trucks of the 80's..the rc 3000 arm rest cushions,the rr 5000, driver antifatigue handle...and a big back cushion also a flip down seat with the big compartment unit and the sc 4000 series all ergonomic handles and 1200.00 suspension seat....crown was all about driver comfort as well........ergonomics is the #1 selling point since the mid/late 90's with everyone....anyways,the crown will see severe duty and lets see in 10,000 hours what it looks like..