On the s8, I did all cam tensioner pads, the check valves under the valley pan,
new valleypan, all seals cam/crank(except rear main) Valve cover gaskets, spark plugs, new coolant temp sensor,
radiator and heater hoses. Also, timing belt, water pump, thermostat etc.
Just basically did everything while it was out, it's a lot easier and now I have no leaks and a great running engine.
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