My cars oil is low every 2 weeks no signs of leak or burning oil what cold be wrong?

My 1995 ford thunderbird has to have about 2 qrts oil added about every 2 weeks. There is no signs of an oil leak, and there is no smoke to show burning oil. It's like the oil disappears. What could this be from?My cars oil is low every 2 weeks no signs of leak or burning oil what cold be wrong?
Internal oil consumption ( burning oil ) will not necessarily involve visible blue smoke - if you have no visible evidence of leakage then you can be sure that the losses are due to internal consumption.My cars oil is low every 2 weeks no signs of leak or burning oil what cold be wrong?
oil can disappear several ways. bad rings let it either get sucked into the chamber and burned or get blown through the PCV valve and burned. a bad head or head gasket can leak into either the manifolds or the cooling system. leaks are always a possibility and not all of them leave a drip on the ground. a few easy checks- inspect the underside of the car for oil coating it, check the cooling system for oil and the crankcase for coolant. in the first you may see an oil line in the overflow tank or a slick inside it. if the latter you will have a whitish foam and the oil will be off color. remove the oil filler cap while the engine is running, check for whitish deposits and gasses being blown out past your hand as you cover the hole with your palm. a compression test will often find problems as will a blow by test. UV dye willl help spot small leaks. you didn't mention how old the car is or the mileage driven in 2 weeks. many cars when they get older will use a qt / thousand miles just from wear amd age. try the simple stuff and them you will either need to buy / borrow, tools of see your friendly garage. good luck hope this helps
Bad valve stems seals can allow a small amount of oil to slide down the valve and be burned in combustion chamber without a visible amount of smoke. Verify you have no leaks then change your oil and filter,but replace one of the new quarts of oil with a bottle of ';Lucas oil stabilizer ';. It will slow down or stop the problem. I do not recommend any other oil treatment like STP,Pennzoil, or the rest of the highly publicized ones. Lucas is available at autozone,o'reilly ,advanced auto parts and all other major suppliers.
Jay has a good point. Look in your radiator. If the coolant has the consistency of a chocolate milkshake, you have solved your mystery. Ford motors emphasize oil pressure on the upper cylinder, which means that if a head gasket is blown, or if there is a problem at the heads, the oil pressure is higher than the water pressure. So the oil will seep into the cooling system.
It is leaking or burning. To check if it is leaking-when you park your car at night, put a peice of card board under the car from the front bumper to the end of the transmission and from wheel to wheel. check it every mourning for a week. This will help to locate a leak. If its not leaking it is burning . Replace valve guide seals or piston rings.
it's burning it just not a lot at a time. how many miles on the car? chances are your rings and cylinder walls are worn. try running a heavier weight oil and see if it helps. you may want to put in an additive such as Engine Restore.
LOOK IN YOUR RADIATOR