Stumped >.<

[RspecMKiii]

I just bought an 89 turbo and the guy i bought it from just had the head completely rebuilt with a MHG and Arp bolts...its been only a month since i had the car and it has no leaks minimal shaft play and pulls strong....Problem is i noticed one of the water lines to the turbo was bulging at one end so i replaced it. As soon as I took the hose off it looked more like oil than radiator fluid spilling out. So i finish installing the hose and open up the radiator cap and find what looks like a giant oil cooler rather than a radiator. I pressure tested the engine...no loss in pressure...no smoke from exhaust...turbo and piping is clear of any oil....no overheating....Im at a loss.....any feedback will help....Its my only transportation and i do not wanna drive it for fear of nuking my only ride.....