Does this happen to you??

Yeah, tomatoes give me trouble, too.  And it doesn't take much. Seems to be worse this last year or so, for some weird reason.  I have found that yellow tomatoes are much better.  I think they are less acidic.

Define "oil slicks".

If you mean you're seeing oil floating on the water in the toilet, you should have these for the rest of your life, and they're a GOOD thing---the oil you see in the toilet is never going to be fat on your hips. (*grin*)

If you mean you're having anal leakage---see your doctor!

I'm 8+ years out, and lot of fat plus tomato products always mean there'll be orange oil in the toilet.