I'm going to use my PurePower cleanable/reusable oil filter for a 6K oil change interval.I'm also using Mobil 1 motor oil.When I get my oil tested by Oilanlyzers what should I look for? I know silicon level is important but what wear metals to look for?are there any other areas to look at.If it comes back great I'll debate wheather to continue it's use.Thanks Joe