I know... Oil weight is probably the most controversial thing on the plant, but I did have a question or two.

So since I bought this card, I've been running Mobil 1 10W-30 Extended performance with a K&N filter. It works great. The 2002 I had I used to run Mobil 1 15W-50 (only driven in spring / summer / fall, no winter) and it did great.
But I'm wondering if I should run 15w-50 in the 2010 3v, with the only issue being the VCT.

I don't absolutely run the living hell out of my cars, but...

2010 Mustang GT 3v, oil weight