I currently have Delo 15-40 in the ZX6E. It got ridden about 60 miles in the one week I had the bike before leaving. The oil will have been in the bike about 9 months, with only the 60 miles, and then some starts to keep the battery good. The gas got some Sta-bil, and the oil has gotten aobut 4 oz. of LC. Should I change it out when I get home, or wait until I am leaving to swap it out?