3406E oil and coolant issues - separate

Hey fella's, so back in December I did an inframe on this ol beast and things have been running great till about a month ago. It suddenly started using oil, more n more to where its now about a gallon every 400 miles or so. I was gonna run it to the end of the month n then dig into it, but now I have a new problem. 3 days ago I suddenly noticed it burning coolant, and the following day, my oil pressure had dropped from 53 to 33. I changed out the filter and now its back to normal again, but who knows for how long. I can see alot of steam out the stacks and when its idling, it doesnt seem smooth like normal, so I know its definitely burning coolant. I added 3 gallons last night, well se what tonight brings till I get home tomorrow. My fuel tanks are looking on the darker side, kinda like Im getting oil in the fuel. What do I do, where do I start and am I looking at an inframe again?? Also, my air compressor looks like its leaking and puking alot if oil, so Ive already got one of those on order...