A metric ton is 7.3 barrels, which 307 gallons. So 0.36 tons of oil per gram of nickel means 110 gallons of oil per gram, which still does not match up with Rossi's figure of "517 tons/gram". Multiplying gallons by 3.8 liter/gal gives 419 liters, which is much closer and leads me to think that Rossi slipped a few decimals, and meant kilograms of oil per gram of nickel, rather than tons of oil.
Yeah, after looking at [0087] again I see that I’m trying to replace a weight - ton - with a volume - gallon. Just doesn’t fit.
Also remember crude (If that is what he is talking about) is 42 gallons per barrel.