>>14137639OK, since you asked politely.
I figure 32 ounces of mix had 32 * (50/51) ounces of gasoline and 32 * (1/51) ounces of oil.
If you are just adding more oil, we want a total of 32 * (50/51) * (1/40) ounces of oil,
That's (32/51)* (50/40 -1 ) more ounces than we already have, which reduces to (32/51)*(1/4) = 8/51 ounces, approximately 0.1586 ounces
A tsp is 1/6 ounces, approximately 0.1667 ounces.
