What Oil to use in Merc 600's
#1
Registered
Thread Starter
What Oil to use in Merc 600's
What is the absolute best oil to use in Mercruiser 600's? We use Mobil 1 in the other 3 boats (Merc 5.0, Merc 502, merc 496's)
#3
Charter Member # 55
Charter Member
I use Mobil1 15/50 in my 525SC and change it every 25 hours. I also just saw the walmart started carrying it in 5 qt jugs again and in looks to be the old formula before the came out with all the new "special" versions.