Bad lifters? Options

[Taxiwardance]

Alright well I Had a bad oil leak coming from somewhere on the front case. This is my daily (only) driver so I had been putting it off for a while. I was driving around town last night and the oil pressure light came on (gauge doesn’t work). So I went to Wal-Mart and bought some oil and put 2 quarts in and decided I would put in some oil additive to try and thicken it up slightly so the oil wouldn’t leak as bad. BAD IDEA!!! I started it up and was on my way down the interstate when I started hearing a clicking noise coming from the engine. I got maybe 3 miles then pulled off and into a parking lot. When I slowed down I noticed that the clicking had turned into more of a thumping sound that was shaking my foot through the clutch pedal. I accelerated and it started making a louder thumping noise and would not pick up at all. With the pedal to the floor I got up to maybe 15mph after a good min. I pulled over and let it run for a second and it just got louder and then started shaking bad and making weird noises so I got nervous and shut it down before it shut itself down. I didn’t really get the chance to check to much to find where the noise was coming from but I thought maybe lifters or a rod from the noise? The timing is fine and it didn’t skip any teeth. I got it towed back today and am in the process of tearing it apart to fix the oil leak and find out what the problem was. Anybody know what this may be. I know I wasn’t thinking when I added the oil treatment and that’s why I think it may be the lifters, but I’ve never had a problem with them before so I don’t know what to look for. It was fine before I added the oil. I’m going nuts trying to diagnosing this damn car. Anyone have an idea what’s up?

[Taxiwardance]

its a 92 talon tsi awd 5 speed. It was more like a thumping sound that happend about 2 times a second and when i pushed in the clutch it was shaking bad. I always had it oiled real good And never had a big leak, i had a small leak that caused my timing belt to skip a month ago and i took it up to slopny and got eveyrthing fixed but after about 2 weeks it started eating oil and by the other day i was adding a quart every 200 miles. Turned out to be the oil filter housing was messed up. i got most of the engine disassembled but while trying to remove a bolt off of the front case i put to much pressure on it, bolt broke and i slipped and almost sliced my index finger off. still dont know what the hell i hit but it must have been pretty sharp got back from the ER and know im tring to work with a splint on my finger (harder than it sounds) but i should have the oil pan dropped tomorrow so i can see if its a bearing or not. the oil came out clean though. Anybody know where i can pick up a gasket set for cheap and right away? My car is trying to kill me!