Coolant Light

[bruceybonus]

My coolant Light has just come on....I thought this was a sealed system and therefore no loss, has anyone elses done this at all?

Is there any particular antifreeze i should use to top it up with?

cheers

bruce

[Gsi3.2]

Mine fell 1/2" not long after I bought it..hasnt moved since..

As to what antifreeze to put in if it's the pink you have to add more of the pink.This is longlife antifreeze giving longer replacement intervals than the blue.To the best of my (limited) knowledge on the subject they are not to be mixed..

[lborob17]

I presume you have got manual boxes as a coolant drop on the auto is a sign of heat exchanger leaking - which doesnt do a lot of good to your auto box

[Inspektor]

Mine dropped a couple of inches not long after I got it, Has'nt moved since.
Just checked it tonight and it still has'nt moved. My N/S/R tyre was down to 16psi though

[John H]

Mine came on 4 or 5 months ago, i just topped it up with water
i'll get it checked soon now the colder weather is coming though

[Gsi3.2]

I presume you have got manual boxes as a coolant drop on the auto is a sign of heat exchanger leaking - which doesnt do a lot of good to your auto box

Nope I've got the auto...It only fell the once and I've been checking the fliud for contamination with this nervous feeling...

[bruceybonus]

Nah, mines the auto... restarted last night, didn't show this time..will keep an eye on it... hope its not the start of something!

[Gsi3.2]

Brucey..

Keep an eye on the fluid in the box..Cherry red is okay, strawberry milkshake is BAAAD news..Black fluid is clutch band material burning..If it's all good then no worries..

[bruceybonus]

nice one.. will check.. cheers for that!

[Big Bri]

Brucey..

Keep an eye on the fluid in the box..Cherry red is okay, strawberry milkshake is BAAAD news..Black fluid is clutch band material burning..If it's all good then no worries..

How do you check it then? Auto boxes no longer have a dipstick. The dealer checks the level with the plug in computer - this is progress? I believe that they have to suck some out of the filler hole to check the colour. Can anyone confirm this?

I fitted a kenlowe oil cooler to mine as this gearbox is at its torque limit, according to Vauxhall. I have a need to tow trailers and have had arguments with Vx over the reduced towing limit on this model. The engine management software is special for the auto and is not the same as the manual gearbox version. This is to reduce the torque level. Vx said that the gearbox oil gets too hot if you tow over 1300kg (the manual is 1700kg), so I said how about fitting a proper oil cooler instead of the plain tube running through the engine's radiator. This is so inefficient. They said that they would not be fitting a proper cooler as "there was no demand"! The Kenlowe achieves 50 times greater cooling. My dealer said that they had difficulty in getting the oil temp up to the 85 degrees needed for the oil level check. Shows that it works.

I have been told (by Kenlowe) that all 2005 model automatic Signums and Vectras now have proper oil coolers but I have not been able to check this. If anyone out there has a 2005 auto version can they have a look?

Getting back to the topic, a couple of months ago I had the fluid level light come on shortly after starting the engine and travelling a few hundred yards. I stopped and checked the header tank and it was down about half an inch. I restarted the engine and all was well. A few days later it did it again and this time I topped it up with the small amount necessary. It has not happened again- no more fluid loss. Why did it happen? No idea as there are no leaks anywhere.