Thread: Ideal water temp 300 TDi what should it be?

Maybe the insect screen could have an effect a higher speeds.

You say you've had it flushed - IME the only way to know that a radiator is properly clean is to have one of the tanks taken off and the tubes rodded (costs $100 -$125).

Doesn't answer your question about temp I know but gauges are gauges - has it been calibrated? I think all that it is indicating is that the engine is running hotter at higher speeds.

overview of mine

front bar
driving lights
A/C condensor removed
new head, radiator, water pump 3 years ago
fuel pump tweeked
four land rover badges across the grill

i also have a mechanical temp guage

commuting/town run about
90-92 degrees

touring mode, fully loaded towing 1300kg camper
95 on the flat
nudges over 100 degree when pushing hard through hilly/ranges tryng to maintain sign posted speed...it got to 105 on my recent trip which seemed to be its max....it than drops back to 95 when cruising on the flat

i have noticed this from when i converted to a mechanical guage which was a year or so prior to replacing the headgasket

Sounds about the same as mine. Around town 85C, or 90C with the air on. I remember reading a thread on here where it was said the water pump starts cavitating at 115C?

Thanks for the replies. I feel a bit relieved now.

hi mud I've got a 98 110 300tdi mine was running around 85 to 90 by the vdo towing a 1500 kg camper and loaded with work tools.
I wasn't happy so I fitted a new radiator with a extra cooling row added.
its got 335,000ks on the clock now doesn't go above 85 even with the aircon I run 50/50 coolant as well and change it every 20,000ks
but I am fanatical with coolant and oils.
other gear full maxidrive conversion,stronger cvs, warn winch,2 inch lift,super pro bushes all round,larger intercooler,stronger steering arm,
rock sliders,bash plate, diff protectors,free flowing exaust.
cheers