The coils is more due to a light misfire that I think is caused by one of them. It got way worse for a little bit after I had spilled some water near them so I think one is cracked. Although I do have more laying around but they are pretty old.
Didn't know about the supercharger oil. The info I read suggested every 30,000 miles, but everyone I've talked to about it has never even heard of changing the fluid in them before.