I used to be anti-additives, but, I have changed my mind this year.
Gasoline quality is so variable from the vendors, MMO can be a real "fix" to a lot of problems.
If I could still buy AMOCO Ultimate Unleaded that was available in 1968, I would not need additives.
I am now +1 on Marvel Mystery Oil for single cylinder K Kohlers, I have seen 2 engines with sticky valves helped by adding MMO to the oil.
I believe that MMO can help when added to the gas also. I have not added MMO to the gas yet as I have not determined the correct amount.
I used to believe WD-40 was good for rust prevention until I found better products.
Just my opinion . -
