Update: Did 5K on 5w-30 Castrol Magnatec Synthetic; engine didn't blow up. Biggest difference was it took a bit longer for the engine to reach operating temps where it shuts offs and a very slight hit to my MPG, which is likely from a combo of the thicker oil's parasitic drag on internal components and the engine running longer to reach temperature Engine noise was also reduced a bit; that part I liked. Went back to 0W-20 Castrol Magnatec Synthetic this change though.
I used the same oil on my last change and have experienced exactly the same thing. I will be going back to 0W-20 in about 2 thousand miles.
