Very little smoke on modern motors with working cats. They clean it right up, except when cold. I doubt they leak as much on a cold motor though.

The best way to determine the condition of VG seals on 103 motors is with oil consumption as that is always the problem. They are simple to do and although the book probably says 3-3.5 hours a good tech can probably do them in 1-2 hours.

The debate here is always wether to do guides. My advice is to do seals at any milegae untill they don't last 20k. Then do guides. Even if they only last 20k they are still a bargain against the cost of a complete head job.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician