My 94 BPU Supra tt has been leaking oil for a few months now. At first I thought it was the rear seal taking a dump on me. After reading several threads in this section I have come to realize that it is the valve cover gaskets. I have the classic oil on the sparkplugs ect... I am thinking while I have the valve covers off that I will polish them. They are aluminium right??? I have seen this done, but have never heard anybody talk about doing it. Also my dumb ass have neglected to purchase a toyota service manual... so is the valve cover bolt torque rating 48in/lbs???