oil level keeps getting low, there are no visible leeks i just added oil. on 1998 Chevrolet S10

i keep checking the oil level and after a couple weeks the oil level goes down drastically i dont see any sign of leakage where could the oil be going

Asked by for the 1998 Chevrolet S10
How many miles do you drive per week? How many miles on the S 10? Is it a Blazer with the 4.3 or a pick up whith what engine?
How much oil do you have to add back to bring it up to the PROPER level? More info. needed!
1 more answer
Is your exhaust visible? maybe your car is burning oil...