During a 4400 mile ride through the north central plains, my wife's ST went through 1-1/4 quarts of oil. (We were using Amsoil synthetic 10W40). Other posts in this forum say many times that 998 oil consumption is the nature of the beast, but is this excessive for lots of highway riding? Now that we're back, going to change the oil to XPS blend to see if that makes a diff.

Just wanted to check.