I haven't done mine yet. I rec'd advice to switch to the oil I mentioned earlier and I haven't been able to (visually) see any significant change. That doesn't mean I'm off the hook, just postponing the cam and lifter change.
The TB change wasn't too difficult, but being pretty meticulous....and I am pathetically slow, I took about 2.5 days....re-checking everything as I went. Screwing it up just wasn't an option!! My son and I figure we could do it again in about 5 hrs. But that's if we did it quick.....not 3 years later on.
I get him to pull the covers off to inspect the cam every so often and he has it down to about 5 - 10 min each way, including removing the EGR and looking for the right tools....always a challenge.
The dealer recommended the wrong Castrol 505.00 oil to me, the book specced the wrong oil and apparently there is supposed to be a decal attached to the rad support as well. All were either missing or incorrect. I don't think Castrol makes an appropriate oil.
Your cam may be fine, but it is far better to catch it early, before it destroys a good engine. IF it should wear through the lifter face, which it can do realtively quickly, it will completely destroy the engine from top to bottom as the valve gets in the way of the piston. My suggestion is to simply get yourself informed about it's condition before too many more miles go by.
I've maintained lots of vehicles, including jetskis and aircraft, but these were a new challenge for me to learn.
