[x3mtm]

hi, i have a 99 durango and recently i noticed that it has been comsumming more oil than usual. i check the oil reading (that stick that goes into the motor) regularly, but recently i noticed than it's been under the required line. i put 1 bottle in.....then in the next 2 to 3 days, same thing. there is no leaking, checked engine, no oil on the ground, nothing that says the there oil comming out. for some reason, "is eating more" ANYBODY KNOW WHY?