MMO not Model A

[Ross/Kzoo]

There is a recent thread about Marvel Mystery Oil in Model A's and a few references to the detergent qualities of the additive. My question is how would this perform in modern 1990's and newer automobiles with the closer tolerances?

 

[Purdy Swoft]

It would have the same detergent effect. Newer cars use high detergent oils so MMO wouldn't necessarily be needed for the detergent effect . As Pete said on the other thread, ATF will have the same detergent effect.