I have a 94 ford explorer, and a few questions. I just went to clean my MAS with MAS cleaner. The MAS is really dirty. I used almost the whole can on it and it is still a little dirty (not as bad) I was wondering if it will hurt the MAS to soak it in the cleaner over night? Also, I took off the air intake tube and found oil in it. I felt the tube connected to it going to the oil fill cap, it was bone dry, I even put a Q-tip in it and it came out dry but the intake tube had oil in it probably about an ounce or so maybe less? Any ideas what causes this?