I selected 100 LL fuel for my Viking 110 engine in my 650B as the most stable and available. I am using 1 oz of TCP lead scavenger for every 10 gal of 100 LL added. I also use 1 oz. of Marvel Mystery Oil for every 10 gal of 100 LL to add lubricity and prevent lead deposition.

The Zodiac 650B wing locker provides a handy place to store these fuel additives for addition to cross country filling of 100 LL fuel. The height of the wing locker just fits the one quart bottle of TCP lead scavenger. The Marvel Mystery oil is stored in two 450 ml orange bottles.

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