I've seen Redline mentioned a lot, not so much AMSOIL, and hardly any talk of Mobile 1.
I've always used Mobile 1 in my car (Honda Civic), and most of the time in my truck (Ford Ranger, though I put whatever in it now) and always in my bike (Honda VTX1300 the 10-40 M4RT oil...).
I figured on using Mobile1 in my 370Z, but, having learned that it's a group IV, and not a group V (which from what I've read, Redline is) - should I consider switching?
Same deal with the filter. I've used pretty much whatever filter...typically on my bike, a Honda filter from a dealer (I know it'll work and they can't gripe about warranty, and I've heard rumors about K&N filters sometimes bypass when they aren't clogged), on the car, K&N, Mobile1, Wix - on my truck, whatever...currently K&N, but I've used Fram mostly...
Just looking for advice, not flames - thanks!