It's rapid. Kind of sounds like the sound a card makes when put between the spokes of a bike tire. Mostly hear it on acceleration. I am using 10 40 oil. I added a quart of oil and drove it down the road a bit. The sound improved some, but then the oil light came on again. When I got back home there was oil on the engine, which hadn't happened prior to adding the oil.
Saturday, February 5th, 2011 AT 8:37 PM