My 09 base never loss oil before. It was half a quart down, 2000 miles after oil change at 80% on the maintenance minder. The TB and water pump changed spark plugs and coils changed all fluids changed.this was done 3000 miles ago the Mdx has 94,345 miles on it and runs fine. The only change is the past month I been driving it hard Not the usual babying it. My question is do I need to change the pvc valve.