Did you do a "wet" compression test? If the compression number increases, then it is a problem with the rings/cylinder. If not it will be in the valve train, head, or head gasket, or a piston could have a hole in it, at worst case.

High oil consumption can also be caused by a torn diaphragm in the vacuum pump.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D