[QUOTE=JustinX;915685]
My crossfire has about 150,000. It has a tick sound at startup, but goes away after about 2 minutes. If I drive it to work and it sits out in the sun all day, it does not make the ticking sound at startup. I tried using 2quart of Lucas oil stabilizer with my oil. It quites it down a lot. I will try the heavy duty oil stabilizer in the summer. I’m using the synthetic stuff now.
A little clarification here. First, the thread is 6 years old. Two, the talk of lifters and tappets does not apply here. This engine has needle bearing rockers that ride directly on the overhead cams, no lifters, no tappets, it has a finish like a fine swiss watch. What they may be taking as tappet noise is probably the clearance between the rockers and cams.