Radiator flush and refill antifreeze 306 hdi

[Bailes1992]

HDi should run at 90°c. If it's any less then you want to look at replacing the thermostat.

i don't believe that for a second! . . .. . .an old XUD9TE runs at 80 but a HDI runs at 90? . .get outta town . . .

Most my 406 mileage is on the motorway and it sits happily at 90°c.
Oil sits ~90°c round town and ~110°c on the motorway. Can get the oil upto 130°c when I'm pressing on abit.

They should sit at 90°c.