I've been changing oil my whole life. Where is the oil drain plug on my '08 IS 250 and what tabs are they referring to on the filter box? I'm sure it's simple, just never owned one before.

Theres a "How to" thread pasted at the top of this forum. In it is a "How to change you oil" pictorial step by step on an IS250 graciously done by one of our members. You should check that out.