A8 Parts Forum  

Go Back   A8 Parts Forum > A8 D2 > D2 - Engine Bay

D2 - Engine Bay Everything under the bonnet

Reply
 
Thread Tools Display Modes
  #1  
Old 2nd December 2018, 01:24 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,628
Default Low Coolant warning today!

Haven't used the S8 for a couple of weeks and starting it today got a low coolant warning.
Indeed it was low, and as an emergency measure I topped up with softened water. It took about 750ml to get up to the correct level.

Now I have to confess I haven't checked this in ages, so it could have been low for a while, though I think I would have noticed. So I'll monitor it regularly.

But what do I get to put in it now, assuming it will be OK for a while as is? The label says G12, but looking online it appears that G12+, G12++ or G13 supersede that.

Where would you recommend going and for what, to top up? I have a VW dealer not far away who ought to have coolant in the parts department.
Looking on ECP they recommend TRIPLE QX Antifreeze (Red (Concentrate) Antifreeze/Coolant 1Ltr) Product Code: 523770482, which is only 5/litre.

And would you syphon some out of the tank and top up with concentrate?
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
Reply With Quote
  #2  
Old 2nd December 2018, 01:30 PM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 1,881
Default

The usual culprits for coolant escaping are the radiator, oil cooler pipe and heater core bleed screws.

750ml of water isn't a lot in terms of diluting whats in there (10 litres). I'd grab a couple of litres of concentrate from wherever and put that in neat for the next top-up then use the old container to make a 50/50 mix. Any modern red / pink coolant will be compatible.
__________________


facebook.com/D2Doctor
Reply With Quote
  #3  
Old 2nd December 2018, 01:54 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,628
Default

Thanks MJ, useful advice.
I'll pop along to my nearest ECP sometime and get a couple of litres of that red stuff then.

I'm old enough to remember topping up radiators on almost every journey so losing a pint or so over an unknown period doesn't worry me much!

Edit: Can't be bothered to drive to ECP so ordered online using whatever the current discount is; should be here Tuesday and just over 10 for 2 litres delivered isn't bad.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.

Last edited by HPsauce; 2nd December 2018 at 05:35 PM.
Reply With Quote
  #4  
Old 4th December 2018, 01:16 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,628
Default

Quote:
Originally Posted by HPsauce View Post
should be here Tuesday and just over 10 for 2 litres delivered isn't bad.
ECP seem to be on a go-slow; shipped today and due tomorrow now. At least they've said I'll get a refund on the next-day delivery charges so it's even cheaper now.
I was expecting to need the S8 this evening, but don't now, so fortunately not a problem.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
Reply With Quote
  #5  
Old 4th December 2018, 02:06 PM
ainarssems ainarssems is offline
Senior Member
 
Join Date: Aug 2010
Location: Rushden, Northants
Posts: 3,098
Default

Cracked coolant expansion pipe where the small hose connects also leads to slow coolant loss and is a common problem, mine has been replaced twice and is cracked once again. Another thing could be valves sticking open in the expansion tank cap so water is slowly evaporating or can be pushed out if car gets too warm (also happened to mine, failed electric fan meant it was getting a bit warm and stuck valves in cap meant coolant was disappearing.)
__________________

1997 S8 was Cat B write-off in 2007 but still going strong
Reply With Quote
  #6  
Old 4th December 2018, 03:12 PM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 1,881
Default

Mmm good point on the coolant bottle. I forgot about that one.

There's no reason to not drive it as long as the level is correct. That 750ml of water will make no measurable difference to anything since its diluted the coolant by only a few percent. It might freeze at -29 now instead of -30 Since you have no idea of the concentration that was in there, just add 750ml of neat coolant next time it needs some and you know you've averaged out what you added to be 50:50 ish.
__________________


facebook.com/D2Doctor
Reply With Quote
  #7  
Old 4th December 2018, 03:27 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,628
Default

Yup, that's exactly what I plan to do MJ.
I don't use it much at this time of year, so it's just a case of monitoring for now then investigating once I see some change or detect a leak.

Edit: Pink stuff arrived so I topped up a bit more from just below Min to around Max (tricky as car isn't totally level) - half a litre of neat coolant.
Not exactly the weather for checking for leaks but there's nothing obvious around the header tank, it all looks good.
The cap wasn't "that" tight when I opened it to top up the other day; it's on firmly now.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.

Last edited by HPsauce; 5th December 2018 at 01:46 PM.
Reply With Quote
  #8  
Old 7th December 2018, 01:08 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,628
Default

Finally been for a short drive today, enough to warm up thoroughly then drive back home a few miles.
All seems well and on popping the bonnet on return coolant levels were fine, risen a bit due to heat expansion.

The only thing I noticed, and I think I've heard this before, was a gentle fading soft hiss from near the ECU bay. It faded away in less than 30 seconds.
It was definitely NOT coming from the area around the Auxiliary Coolant Pump, more behind/below and outboard (adjacent to the wing), I think the only pressurised stuff there is aircon piping?

I'll check again when the engine has cooled; I wasn't brave enough (this time) to loosen the coolant cap to see if it was holding pressure.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.

Last edited by HPsauce; 7th December 2018 at 01:26 PM.
Reply With Quote
  #9  
Old 7th December 2018, 02:03 PM
MikkiJayne MikkiJayne is offline
Senior Member
 
Join Date: Jan 2012
Location: Devon
Posts: 1,881
Default

That hiss is normal. Its the aircon bleeding off pressure from the pump side through the choke which is just next to the ECU box, exactly where you describe.
__________________


facebook.com/D2Doctor
Reply With Quote
  #10  
Old 7th December 2018, 02:05 PM
HPsauce HPsauce is offline
Senior Member
 
Join Date: Sep 2011
Location: About 250m from HS2!
Posts: 6,628
Default

Thanks MJ, I thought that was it, good to get confirmation.
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 01:04 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.