Well, in my case it turned out to be the t-stat. It was replaced, along with a coolant flush and now she gets right up to 85-90C, and sticks there until you idle for awhile where it will creep into that famliar 100C territory

Thanks all for the input!

Regards,
- Ryan

__________________
'95 E420 - 'Shadowfax' 138kmi.
'92 Volvo 740Turbo Bard 193kmi
'74 240D - 'Ol' Green' 4spd Manual 104kmi. (sold )
'77 300D - 'Red' 223kmi (sold)
'75 240D - 'Bianca the Blue Bomber' (sold)