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Yes, I am an active participant in Saabnet, an excellent Saab forum. They all recommended Auto-RX but I am hesitant to switch to non-synthetic oil to do this. They actually directed me to this forum. Sorry if I am really dumb, but what's "LC?"

I have a 2001 Saab 9-5 with the 3.0t V6. It has 167k miles on it. The engine has a noticeable ticking sound from the rear bank of cylinders. It's not an exhaust leak. The ticking is there all the time regardless of temperature. It gets faster as the engine revs. I think it's a lifter or two. I...