Coolant MIN to MAX - how much?

Bolin · 18th March 2011, 23:50

Well, as titled.

How much coolant is needed to go from MIN to MAX in the expansion tank? (KV6 but I understand they are all the same).

My level was below MIN and went to MAX with about 100ml, I'm doubting that was right as it doesn't seem much at all.

Any knowledge of how much it takes MIN to MAX would be greatly appreciated!

Cheers, Bolin.

T-Cut · 19th March 2011, 11:52

I'd say there's around 200ml difference between Max and Min.

TC

Freebyrd · 19th March 2011, 12:07

There is very little difference between Max & Min. 200ml is about right. Slightly above Max will make no difference, it will soon settle back to Max after a long(ish) run.

greendriver · 19th March 2011, 12:15

Doesn't take much to top up, it's a small tank. I'm having to top up every day at the moment, for some reason it only seems to lose coolant after a run, as it cools over the following 24 hrs.

T-Cut · 19th March 2011, 12:19

In a 1.8T, that's a significant loss and therefore a significant risk. The primary cause of HGF in these engines (or any other engine) is loss of coolant leading to excessive overheat. The 1.8 cooling system is well known for leaks and all are identified in the forum discussions. You may even find a list of them if you do a search.

TC

greendriver · 19th March 2011, 12:27

Quote:

Originally Posted by T-Cut

In a 1.8T, that's a significant loss and therefore a significant risk. The primary cause of HGF in these engines (or any other engine) is loss of coolant leading to excessive overheat. The 1.8 cooling system is well known for leaks and all are identified in the forum discussions. You may even find a list of them if you do a search.

TC

I've already booked her in for the cambelt and water pump etc. with a request to trace the leak. Doesn't seem to lose coolant during a run (I check like a mad thing), only when she cools. Ought to be a clue but I do not have a haynes what's going on....

chris75 · 19th March 2011, 13:14

Quote:

Originally Posted by greendriver

but I do not have a haynes what's going on....

Nice one ! I think a new phrase has just been born

Bolin · 19th March 2011, 14:04

Hmm, very interesting that's about 200ml.

On mine, the level was below MIN, there appeared to be hardly any coolant in the tank at all, I put in just over 100ml and covered the MAX, so baled out a very small amount so MAX was visible.

Air lock or something perhaps? I'm absolutely sure I measured it correctly.

200ml sounds to me like there isn't much leeway for loosing coolant and not having too little left.

HarryM1BYT · 19th March 2011, 14:34

The Min and Max marks are intended to be points to aim for when it is checked and topped up, there will still be some leeway below the Min mark.

pab · 19th March 2011, 14:36

Quote:

Originally Posted by greendriver

I've already booked her in for the cambelt and water pump etc. with a request to trace the leak. Doesn't seem to lose coolant during a run (I check like a mad thing), only when she cools. Ought to be a clue but I do not have a haynes what's going on....

after the car has been cooling for half an hour check all the hoses,especially the t-piece in the top hose and the inlet manifold,check for dried pinkish residue directly below on the back of the block,use a torch if necessary.

as previously stated on this thread this system cannot afford a drop in coolant charge.

18th March 2011, 23:50	#1
Bolin This is my second home Rover 75 2.5 V6 Connoisseur SE 4dr manual Wedgewood Blue 2 04-05/06/2001 Join Date: Nov 2006 Location: N.E. Hampshire Posts: 4,617 Thanks: 289 Thanked 308 Times in 243 Posts	Coolant MIN to MAX - how much? Well, as titled. How much coolant is needed to go from MIN to MAX in the expansion tank? (KV6 but I understand they are all the same). My level was below MIN and went to MAX with about 100ml, I'm doubting that was right as it doesn't seem much at all. Any knowledge of how much it takes MIN to MAX would be greatly appreciated! Cheers, Bolin.

19th March 2011, 14:34	#9
HarryM1BYT This is my second home 75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010 Location: Leeds Posts: 17,273 Thanks: 2,160 Thanked 2,061 Times in 1,586 Posts	The Min and Max marks are intended to be points to aim for when it is checked and topped up, there will still be some leeway below the Min mark. __________________ Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money.

19th March 2011, 11:52	#2
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	I'd say there's around 200ml difference between Max and Min. TC

19th March 2011, 12:07	#3
Freebyrd Posted a thing or two MG ZT-T Join Date: May 2010 Location: Edinburgh Posts: 1,667 Thanks: 992 Thanked 384 Times in 277 Posts	There is very little difference between Max & Min. 200ml is about right. Slightly above Max will make no difference, it will soon settle back to Max after a long(ish) run.

19th March 2011, 12:15	#4
greendriver This is my second home MG ZTT 180 in Poseidon Join Date: Feb 2011 Location: Croydon Posts: 3,745 Thanks: 44 Thanked 86 Times in 75 Posts	Doesn't take much to top up, it's a small tank. I'm having to top up every day at the moment, for some reason it only seems to lose coolant after a run, as it cools over the following 24 hrs.

19th March 2011, 12:19	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	In a 1.8T, that's a significant loss and therefore a significant risk. The primary cause of HGF in these engines (or any other engine) is loss of coolant leading to excessive overheat. The 1.8 cooling system is well known for leaks and all are identified in the forum discussions. You may even find a list of them if you do a search. TC

19th March 2011, 14:04	#8
Bolin This is my second home Rover 75 2.5 V6 Connoisseur SE 4dr manual Wedgewood Blue 2 04-05/06/2001 Join Date: Nov 2006 Location: N.E. Hampshire Posts: 4,617 Thanks: 289 Thanked 308 Times in 243 Posts	Hmm, very interesting that's about 200ml. On mine, the level was below MIN, there appeared to be hardly any coolant in the tank at all, I put in just over 100ml and covered the MAX, so baled out a very small amount so MAX was visible. Air lock or something perhaps? I'm absolutely sure I measured it correctly. 200ml sounds to me like there isn't much leeway for loosing coolant and not having too little left.