Bo:

Coked oil will be a pure pain to remove -- hard glassy carbon that won't dissolve in much that won't eat the aluminum intake.

Needless to say, complete removal is required -- a chunk of this stuff will bend a rod if it gets in the cylinder!

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!