The engines are configured to "Never" have random failures but that doesn't seem to solve anything. While climbing or enroute all gauges are in the green. Oil temp and pressure are good also.Even so, VERY often one engine starts losing torque rapidly and an external check shows oil streaks along the nacelle.Usually, the other engines fails shortly after the first. I must be doing something wrong but haven't the slightest idea what it might be. None of the gauges are even close to the yellow zone.I really like this plane but am about ready to park it and switch back to the piston Duke unless someone can help me out.Thanks in advanceNeal H

Appears the config program isn't working. Tried a reinstall? Is your UAC turned off?

Are you utilizing the oil cooling doors?

Oil cooling doors are a good place to start.Also, you need to keep your airspeed up. Don't just blast your way into the sky at 3 or 4 thousand feet per minute...you need airflow into the turbines to keep them cool, and the way to get that is airspeed. You should climb initially at 170 KIAS and at about ten or fifteen thousand feet, let that drop off to 160 KIAS.Another thing to consider in running these engines is ITT. You can run them at the ITT limits, but only for so long. What I typically do is climb at 160-170 KIAS and keep the ITT to about 720 to 730 degrees. That should give you around 2000 feet per minute and that's still more than your pressurization can handle if you're going up into the high teens or twenties to cruise (assuming you keep the cabin climb rate at 500-1000 fpm, since more than that is tough on the eardrums). On hot days, I'll also have to open the oil cooler doors.

I know I'm doing it all wrong but I've found no reason to bother keeping the oil cooler doors at any position except full open.