Don't use a spout such as we used to have for cars. These are harder to find, harder to keep clean, and stand a chance of putting metal into the can that you won't be able to see.
A standard triangular bottle opener used to make a small triangle opening at two sides of the top of the can (one for pouring, one for ventillation) can be had at any department or hardware store for about ninety-nine cents.
Be sure to thoroughly wipe down the can surface for any dust or contaminates. Turbine oil gets changed far less often, and a turbine engine and turbine oil is far less tolerant than piston engine oil with respect to contamination, and should be treated differently. You're probably aware, but you should avoid mixing brands and certainly never mix types, with turbine oil.