It will probably take 3-4 good sessions with a power washer and ample amounts of degreaser depending on the previous owners driving habits.
A clean engine will perform better and last longer.
Once it's clean keep it clean after your done playing.
Placed the plastic liner in the truck after cleaning the bed in preparation for the 105 gallon L shaped auxiliary tank.
Hot Fox heated fuel pickup came in the mail today here are the pictures.
