A lot of it is how the cooling and lubrication is set up. Many turbos use engine oil lubrication and cool the bearings the same way, which can easily degrade oi

A lot of it is how the cooling and lubrication is set up. Many turbos use engine oil lubrication and cool the bearings the same way, which can easily degrade oil additive quality prematurely, since that bearing is heated by 1000*F exhaust gases and running around 200k RPMs. Change your oil early (~5k miles, earlier than most manufacturer recommendations) and use full synthetic and they should last. Oh, and don’t run right up to the redline constantly…