Car never burned,or leaked oil till few days back.Drove about fifty mi hwy.Smelled oil burning on engine.Oil coming out oil pan gasket,And from every gasket from engine +under timing belt cover. Can it be fixed without complete engime extraction and so on?

Age ;). But seriously, is car leaking or burning oil? Do you see any oil under car? Clean engine and try to locate when it comes from. There are many possibilities. From valve cover gasket to pinhole in oil pan or leaky seal on oil filter or drain plug.

engine burning oil could have worn piston rings.worn valve stem seals or engine oil return holes stopped up.could have faulty pcv valve.make sure pcv getting vacuum remove pcv while engine running should feel vacuum if not pcv faulty or pcv vacuum hose disconnect or broken.check where you park your vechicle if you see oil spots engine has leaking pan gasket,valve cover gaskets could be leaking oil and the front crankshaft seal or rear main seal could be leaking oil.check make sure oil filter hand tight and check oil pan drain plug make sure its tight.

Is it leaking oil or burning it i ask,as for a estimate of a repair then iam the wrong one here as iam in spain .Too know exactly whats wrong here i would need my gnarled old head under the bonnet with a cuppa in one hand ,ciggy in the other and kick it up the exhaust with my steel capped boots on .Now is theri blue smoke out the back or a puddle of oil underneath the engine then this would give me a better idea as to whats wrong

oil leaks could be coming from a few spots ,valve cover gasket ,oil pan gasket and a bad harmonica balancer seal ,and the white smoke coming out your tail pipe is a sign of a blown head gasket ,check your dip stick and if the oil is creamy is your head gasket

assuming car is leaking oil not burning it [blue smoke] look under car and check where oil is coming from if done at a shop should have brought back so correction could be made --if coming from filter area possible wrong filter -cross threaded -loose -or missing/doubled gasket=if coming from pan area drain bolt same -loose -cross threaded-missing gasket-

possibly the pcv but check if your cars exhaust smoke is blueish or white in color if it does and your car doesnt have an oil leak then sure its burning engine oil along with fuel, the piston rings is defective, since you replaced engine oil the additive that the owner has put with the oil to prevent blowby is gone thats why it starts burning oil.....

Bradley,
You have stated two problems. Coming to second first. Smell of burning rubber. in the car rubber is only at two places where it can burn, The tyres, unlikely as you have not commented upon your driving habits. Some people like to rev the engine so much before take off that the tyres go burning for the first few hundred meters. And then there is rubber on the wires and cables. You have to check the wires for any heat while the engine is running.
Coming to the first now. White smoke is generally of unburnt fiel and not oil. Oil alwayd give black smoke and that is the indication you get when the exhaust is giving black smoke. That means that the engine is consuming oil. if it is white then that indicates that the engine is cold and burning more gas/diesel. Is your a diesel vehicle?? But as you say it from under the hood. And that too behind the engine block. May be that the gasket is leaking from somewhere. If you could check the engine oil level for a few days early in the morning before starting the engine. If the level drops and the exhaust tail pipe does not blacken your finger when you rub it in it would mean that the oil is being burnt. Now what I suggest is that with the engine running and hand brakes on, go under the car with hood open and try to locate the source of the smoke. I am sure you would be able to locate it.
Then we talk again.

Dear Sir,
Here is the oil leaking Problem Identifying Technique

Engine oil leaks from the valve cover gasket are common.

The intake manifold plenum gasket may leak and cause increased oil consumption/burning and a spark knock during acceleration; the gasket should be replaced.

External oil leaks from valve cover gaskets, intake gaskets (front or rear), and the rear crankshaft (rear main) seal area are common. The rear main seal is an unlikely source. Normally, the bearing cap mating surfaces (as well as the sealing surface between the oil pan and bearing cap) are the source for the leaks.

Engine oil leaks at the distributor can be misdiagnosed as leaks from the intake manifold seal, oil pan gasket, or rear crankshaft (rear main) seal. A revised distributor is available if oil is found inside the distributor.

If the oil filter casing shows signs of distortion from excessive oil pressure, the oil pump should be replaced.

Often misdiagnosed as a leaking oil filter gasket, the oil filter adapter can seep from between the adapter and engine block.

Carbon buildup on the top of the piston is common. As the buildup increases with mileage and over time, symptoms may vary from light ticking, to ticking/hammering, to hammering/knocking noises. Fuel injector cleaner often solves the problem.

I think it helps to analyse u r Problem

it sounds like a rear main seal or a head gasket check your oil if it looks sort of like a milk shake color or foamy its the head gasket if its is leaving little spots under the car towards the back of the motor it is the rear main seal or it could an oil pan gasket.