How much torco per gallon do i need to add? I just filled up so it would be like 15 or 15.5 gallons. Any help would be great thanks

i use a half can per fill up

Here is a breakdown based on 93 octane, and the standard torco unleaded:

Pulled from an Excel table that I put together from the Torco data sheet. PM me if you would like a copy.

gal oz Torco Octane oz/gal oct inc cans/tank (12g)
20 0 93 256 0.0 0 0
12 6 94 256 0.5 2 0.19
12 11 96 139.64 0.9 3 0.3
20 32 97 80 1.6 5 0.6
10 32 104 40 3.2 11 1.2
5 32 107 20 6.4 14 2.4