Drivers side valve cover

[swathdiver]

I firmly believe the oil consumption issues were directly tied to the PCV system and fixed with the updated valve cover. Our 2003 Hummer H2 with the lq4 engine, 118,000 miles, was using about a half a quarter of oil every 3,000 miles.... Until I updated the valve covers at 112,000 miles. Absolutely no oil consumption since then.

Mine used to consume a lot of oil when running regular Mobil One. Switched over to ACDelco and Quaker State which have higher viscosity numbers and no oil consumption since.