Yeah.. it does look pretty dark/thick. Doesn't look like oil that was changed 2 months ago, unless you've been doing a lot of driving. I'm sure you put her through the ropes when you get her, but do you drive a lot and with a heavy foot?

I would agree though that at this point, it's best you're just fixing it and moving on. It's not worth the headache and the stress for the little to nothing you might be able to squeeze out of Mitsu (probably nothing).