Was the 1.5 pounds of crud in intake area loaded up around the 1 or 2 intakes? I keep hearing some say there is a likelihood that the crud is being ingested, causing damage to the cylinder walls or rings and starting the downhill process ....
My 350 SDL has about 130K on it and I love it, but wish there was something I could do that would at least make me feel better that there is a chance it won't do whatever it does ...
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg