I’m considering doing an amsoil engine flush with my next oil change. My hesitation is that I’ve got a small “front engine cover” oil leak (never noticed any appreciable drop in oil level between changes), and that I’ve got 105k on the odo and this will be my first engine flush. I‘ve used full...

I use Amsoil. I dont think you have to use Amsoil, but use a good oil! Use a good quality full synthetic, and change it regularly! I thought this was applicable if you havent seen it. Turbochargers Create Conditions Best Suited for Synthetic Motor Oil