upper intake

  1. GM Guy

    Oil in intake manifold

    I replaced all intake manifold gaskets (Fel-pro) and the upper intake plenum(Dorman, I think) about 65k mi ago, when I bought the car for a to/from work car. The car has always used some oil, but has started to use more than 1 qt/1000mi. Last summer I had to replace the MAF sensor and while...