There is not enough detail info here to provide a focused response. I assume you are not mixing up the transmission / oil fillers / dip sticks. -------- Q1: What is the Make / Model of the vehicle? ------- Q2: How many miles on the vehicle? -------- Q3: Automatic or Manual trans? -------- Q4: Is the car level and are you waiting until the car cold to check the oil? -------- Q5: Are you using Synthetic oil (or) have you recently changed to Synthetic oil? -------- Q6: Do you notice any blue smoke out the exhaust (especially when under acceleration or going up hill)? -------- Q7: Did you recently purchase the vehicle used? Note: If Yes to Q7, sometimes sellers will put Synthetic oil it high mileage cars (or) cars with blown head gaskets because synthetic oil does not burn "blue" exhaust as synthetic oil can appear to have mostly clear / normal exhaust when it's burnt in the cylinders. -------- In 40 years of working on cars / engines, there is only one vehicle I encountered that literally consumed almost 1 Gallon of oil per week and that was a very high mileage mid-70s Chevrolet with blown rings, valve guides / seals, etc. (oddly it was not leaking much oil). This vehicle billowed beautiful blue smoke the size of thunder clouds and was easy to spot for miles.

------ Lastly, if you're using Synthetic (and the vehicle manufacturer owners manual says it's safe), I would switch to using dino oil and monitor for blue smoke. Also, you could perform an UV Oil Leak Dye test and see if it's leaking somewhere in the Engine / Trans you can't see (it "might" also show up at exhaust points as well): https://tracerproducts.com/leakfinder-products/oil-based-dye/