heating problem on GQ

Submitted: Monday, Jan 09, 2006 at 13:30
ThreadID: 29502 Views:1855 Replies:6 FollowUps:2
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As Adelaide has had a few hot days in the past month I have noticed a heating problem with my 2.8td GQ.
Going up the freeway thru the hills yesterday the temp sat on the "H" all the way up (top of the dial). Didn't start to drop until I got to Stirling (top of the hills). Same problem up North near Wilmington going thru Horricks pass only 2 weeks ago.
Temp comes back to normal fairly quickly after the climbing has stopped. Coolant and hoses are new and coolant level is fine. I have actually put in the highest quality coolant.
1. is this normal for the guage to get so high?
2. am I doing any harm to the engine or turbo?
3. as the radiator is 10 years old is it time for a new one?

Thanks,
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