I don't/won't use the old clear silicone for anything anymore. It has come loose of everything that I've used it on that's three years or older.
Go to the nearest RV shop and ask them what they're using.
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.