83 Lincoln Continental

[mr_rye89]

I overcharged my truck and it dumped some oil out of the rear seal of the A/C compressor, right on the intake manifold, a stinky mess! I've never heard of oil leaking out of the evaporator side, but it's certainly possible

[MIPS]

An oil leak that large should give a LOT of noise as the AC system vents. Are you positive the AC still works?

When you mention a T-junction though, I know some vehicles (my eagle included) shared the heater core in the same cavity as the evaporator and thus used a bypass valve to shut the heater core off whenever the AC was turned on. Due to the high heat and the mechanical nature they are famous for leaking.

Edited: one other thing. Are you POSITIVE it's not just condensation dripping off the evaporator? It is Arizona but one good rainfall is enough to crank the humidity up to 80% for an afternoon.

[MadMan]

Originally Posted by mr_rye89

I've never heard of oil leaking out of the evaporator side, but it's certainly possible

Happens all the time. I've replaced lots of evaporators. It's always nice when you have the smoking gun of bright neon yellow UV dyed oil is dripping out of the condensate drain under the car.

Originally Posted by MIPS

An oil leak that large should give a LOT of noise as the AC system vents. Are you positive the AC still works?

Eh, it's possible. I've seen a few evaporators fail in that manner. They leak just enough to get the oil smell through the vents when running the a/c, but slow enough that the a/c works at least through a season.