I can now report that driving the 2.8CRD GV without an IOD fuse makes no noticeable difference to fuel consumption after proper analysis.

Leedsman.

 

thank you.

 

Thanks for the feedback Leedsman. It's good of you to go to all that trouble and share your findings.

 

It seems running without an IOD fuse affects the way a computed readout is generated. Maybe there is a connexion here as to why many car's computed readout is so inaccurate. The brim-brim method shows reality however.

Leedsman.