More truck issues. Oil question.

As some of you know I'm fighting a losing battle with my everyday driver 2001 ram 1500. Yesterday I finished replacing the wheel hub (bearings) today I was attempting to check the diff fluid but its raining to hard and muddy. But I check the oil and it was completely empty like not even showing on the dipstick I added a quart and its showing about 1/2 inch on the bottom of the dipstick now. Here is the problem. I just changed the oil less than 2k miles ago. So I'm burning up to 4 quarts in 2k miles. It don't leak anything dramatically. It's got 260k so typical valve covers but nothing excessive. Nothing on the ground where I park etc. So its burning it.
Here is my question. Will a heavier oil help this? I'm gonna start using some Lucas and the thought about going to straight 30w or even 40w I run gtx high mileage 10w30 now. Always have since I have owned this truck. (Eight years now) its always used a little like a quart every oil change. I usually go around 4k every oil change. But this go around I'm only half way thru and went thru at least 4 quarts. Is there anything else I can do short of rebuilding the entire engine? Remember this truck is on life support and do not want to throw a ton of money at it. Thanks

If it's never been apart in 260K miles then it's rings, valve guide seals and most likely the intake manifold base plate gasket. Look down through the throttle plates with a strong beam of light and if you see a pool of oil, there is your answer to that amount of oil lose. Should be fouling your plugs with that kind of oil usage if you are burning it, unless you are working it real hard.

That's pretty light oil (10w-30) for that number of miles. Surprised your oil pressure isn't low. You can try some 15w-40 but it's not a fix. Oil is cheap vs a tear down/rebuild if it's not a keeper!