I've put about 60k on this car over the last couple years, predominantly (but not exclusively) on Mobil1 0-40, and i've been pretty happy with it. However, last time I went to autozone they were out of it so I picked up a jug of the high mileage extended performance 10-30 I believe. I figured even if it says it's good for 15k I'd change it out after around 7k, no harm done.
Well after running it for about a week I went for a pretty hard drive, and when I stopped I noticed my car a) smelled, b) sounded rough, and c) had some smoke coming off the engine. When I cracked the oil cap I noticed some light smoking coming out. Checked the oil level, fine. Since then I've noticed the crispy smell hanging around and it still sounds kind of rough. Now I'm wondering if this oil can't really handle aggressive driving. I started researching a little bit and finding out about different oils and zinc levels and whatnot. Is there another oil I should be using that will offer better protection, between the 130k on my engine and my tendency to disregard speed limits?
I also have a gutted cat so I'm not concerned about ruining it with high levels of zinc, and I see a lot of people recommending premium brands like motul, liquimolli, pentosin, etc...also any weight recommendations, 0-40, 10-40...20-50? Car is pretty stocks except apr 93 tune and turbo back exhaust (and gutted cat like I said). Any feedback is much appreciated, thanks.