Fuel:

Fuel contamination
Bug


Oil:
Bearing damage
Coolant leakage (colored)
Water (sludge)
Ring failure


Ooop that's six. Sorry

Cheers


Joe wrote:

Ever bother to cut your filters up? Not blunt filters that Mooron
uses, but your Fuel Oil and Water.

You should, you can learn much about whats going on.

For 5 asa points tell me 5 things you can learn by cutting up your old
filters.

Joe