Today I removed my throttle body, intake, and oil trap. The throttle body was full of oily crud. I'm surprised that my volvo was ruuning so well. The intake runners and the back of the intake valves were also pretty dirty. I'll clean the throttle body and every thing as best as I can. My oil trap was surpisingly clean but the oil ring was completly flat and brittle. So I replaced it. The old throttle body and intake gasket did not have any gasket sealer, they were stamped steel. The new ones are some type of paper composit, should I use gasket sealer on these? I only want to do this job ONE time. Putting the flame trap back in with new hoses looks like a lot of work. Any tips now that the throttle body and intake are off.