Decided to go to Nissan in the end and get the Nissan green AntiFreeze
and I mixed it 50/50.

Complete drain of the yellowish looking murky liquid, a few flushes
using the drain plug and air relief valve and fill up again. Noticed a
lot of limescale in the radiator header and limescale at the bottom of
the water reservoir.

The info from Nissan suggests to fill up until the air is bled out, put
the screw in, top up, leave the filler cap up then switch on the engine
and rev at 2000 rpm until the lower pipe gets hot.

The lower pipe never got hot, the top pipe was roasting, and the
radiator just kept bubbling over. I don't think it was boiling.

Got a bit worried by that.

Anyhow thought stuff it and put the filler cap on and drove about 1 mile
and noted that the temperature guage went up at least over half way
mark. Bit nervous.

Came back after an hour, the reservoir level went right down and driving
for a couple of miles, the temperature stabilised. The lower pipe is
also warming up nicely.

I would have suspected the thermostat if it wasn't for the top pipe
getting hot. I would have suspected the water pump if it wasn't for
heating in the cabin.

I suppose this may have just been an air bubble or something?

On Wed, 28 Oct 2009 13:35:00 -0000, Simon Dean <sjdean (AT) home (DOT) cubeone.co.uk>
wrote:

Sounds like one.