Motorcraft fl500s. Got some points to use at Ford dealership . I have a 2019 f150 3.3 Put 5000 a year on it. So once a year OCI normally. Getting some free fl500s and sitting them on the shelf for a couple of years should be ok ? Might throw in a couple air filters also. I figure no issues. Not like outdated milk. But wanted to hear from the collective. Ty