So as promised, here is an update of the sludged cobalt.
Yesterday the engine got its monthly 5 minute motor flush and oil change. New fill was 4 Qts ST conventional 5w30 +1 Qt MMO
First, the oil filter (Fram CH9018)
This was the oil out (5 minute motor flush + 3 Qts ST 5w30, 1 Qt ST...