Just got through installing a CAI on my L., and when i took off the boot connecting the MAF pipe to the throttle body, i noticed a lot of muck (looked like burned engine oil, but was the consistency of mud...). The throttle body was a little brownish, but otherwise ok - the muck didnt seem to go all the way up to the throttle body.

Anything to worry about, or should I just chalk this up to a lazy former owner (I got the truck used, and am apparently doing damage control)...???

Thanks,

Steve