Ok, so in my recent oil change I decided to use Valvoline 5w30 full synthetic with maxlife technology that Valvoline says has special seal conditioners that rejuvenate seals within the engine block to help prevent oil leaks and is intended for high mileage vehicles. Holy smokes (no pun intended), my X5 started smoking with a vengeance! Even after a few minutes idle it would smoke when engine is at operating temperature. It was embarrassing, I tell you.
Given the above situation, I had no choice but to do another oil change (keeping the same filter), now using Rotella T6 + 1 bottle ATP + 1 quart Lucas oil stop leak. After a 3 hours drive, the smoke is completely gone! I'm not going to experiment again! I will do a proper fix "when the time is right"
