That is good to know.
I have had great success with LUCAS PRODUCTS.
They say to run a FULL Synthetic oil with a STRAIGHT Viscosity like 30 or 40 weight so the oil does not COKE, or cook and build up inside of it. Regularly changing the oil and cooling the Turbo's off before shut down will help dramatically. I change my oil more than enough on my Hot Rods. Probably every 500 Miles or so because those 500 miles are like 5000!! I use to change my Long Travel Buggy oil after 1 Weekend Trip to the sand dunes along with the Gear Oil in the Trans. The trans lasted me 5 seasons before it needed a rebuild and the engine ran like it was new always. I truly ABUSED that car no BS.