Marvel Mystery Oil

Bill; Thanks for sharing. Been 51 years for me; Six Bonanzas later, one brief Cessna 140 adventure (not able to keep it out of grass!), two 172's, and the Ercoupe. I am at the cross road about keeping on. If I lived with my Ercoupe probably keep flying till the end. As you mentioned, tough decision. I don't golf, fish, or hunt or travel much any longer. John Farrell

Worth reading before you start tearing into the motor

www.savvyaviation.com/wp-content/uploads...ng-solvent-flush.pdf

John
Just hung it up after 62 years and 5300 hours . . . . (all private pilot) very tough decision . I am 84 and cognitive abilities in the dumper . . . started in an Ercoupe and 12 aircraft later ended ion an Ercoupe Keep on keeping on. Bill James

How much Marvel Mystery Oil to add to the crankcase in a C-85-12F engine?   My mechanic suggested using some to help with oil consumption which is now at about 1 Quart every 2.5 hours.  High time engine but seems to be running strong.  Any recommendations would help.  I used MMO in several of my Bonanzas over the years but can't for the life of me remember how much I added to the oil.  My memory of these incidental things has gone south since I turned 83 this month!!  

As a side query, I wonder how many ERcoupe pilots are in the eighties and still flying their Coupes.  Just curious. Thanks in advance for any and all responses. "Keep the blue side up!"