I think everyone that has taken apart their AOS and 'J' tube has found some oil build-up in there. Even after I installed my new one,100 miles later I disconnected the tube and there was a tiny bit that had built up. I asked my mechanic if it's normal and he said it seems like they all have a small build up of oil.
Either way if you have the original AOS I would change it out anyways,it's been revised several times.
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-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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