SAE 10w40
10w30 synthetic would be the best you can use.
dont really matter. amsoil is good
You can use any kind of 10w-40 oil for a nighthawk
Baby oil
Most use Synthetic Oil.
Rocket oil
They use the oil God gave them in their oil glands.
synthetic oil
10w-20
What are you substituting the oil with? What kind of recipe? You couldn't use butter for the oil in salad dressing. Sometimes it does matter what kind of shortening you use.
Olive oil.