You must drive it pretty hard to get that much oil and condensation. Do you live where it gets very cool at night and hot in the daytime? People in colder climates will get a lot of condensation that passes through because of the cold mornings. Most of the stuff collected is within the first few minutes of driving before the engine has a chance to fully warm up.
If yours is mostly oil then you have to be driving your car really hard. You said 6 months worth, how many miles is that (roughly)?
Silver Ice Metallic 2013 Camaro 2LT
Born 7/29/2012 Delivered 4/24/2013