I just finished a dual timing chain conversion on my 83-380sel. It runs great but my oil pressure gauge is pegged all the way and my valves on the left bank are chattering a little. I used pennzoil platinum 10w-30 synthetic motor oil and new filter and was wondering if its the wrong oil viscosity? I did have the oil filter bracket off, maybe i did somthing wrong reinstalling it? If anybody has some useful information it would be deeply appreciated. it has 108k miles, new chain, gears,guides,water pump,plugs, wires,belts,hoses,filters,and about a dozen other new parts.

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