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Reply to "2 Cycle Oil as 4 Cycle Engine Fuel Additive"

As far as I can see, Amsoil 2 cycle oil is not TC-W3 certified, thus not suitable for cars that have cats.

Why would I pay $10.60, plus shipping, etc, for a 12oz bottle of that PI, when I can pay @$12 for the Supertech TC-W3?. For 128ozs.....

The PI is not cost effective. The ROI is horrible.

I can treat 42.6 tanks of gas on the ST. 3oz per tank. 16,800 miles on a gallon of ST.

The equivilent PI, since you use it every 4K miles, is a bit more than $42.40. Not counting shipping.

So I can either pay @$12 every 16-17K miles, or more than $40.
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