[HardcoreZ28]

My truck has been burning oil for a few months now and gotten progressively worse...losing a quart every 400-500 miles at this point. And yesterday the engine started misfiring so I decided to finally make time to look into the issue.

Pulled all 8 plugs and #'s 3 and 5 (center two on the driver side) were completely fouled out and covered with deposits from oil. All other plugs were ok. I'm assuming it's an intake manifold gasket issue but was also thinking it could be head gasket.

I think intake because it's two adjacent cylinders, the oil is definitely getting into the combustion chambers, no chocolate milk oil, and coolant hasn't been disappearing any faster than normal.

What do you guys think?