1999 Cadillac Escalade

Where are you getting your oil changed at?

Some oil filters are junk and dont have a ck valve in them to hold in the oil. That brief moment may cause your tic

otherwise it may be a lifter bleeding down, you can try heaver oil, like 10w 40 or 20w 50, or add some oil additives, like stp oil treatment, or lucas

if this doesnt help get it looked at