Coolant disappearing

BillB · 04-04-2008, 07:55 AM

This is my 2nd RL and the same symptom has occured in both trucks. At about 1000 miles on Ridgeline #2, the coolant level in the overflow tank is near empty. I have been watching it go down in level over the 1 month of ownership and am interested if anyone knows the cause of this new RL drinking problem? I am thinking of entering my 2008 in an AA program for coolant abuse.

HondaTech · 04-04-2008, 11:18 AM

I would think that the factory does a pretty decent job of getting all the air pockets out of the cooling system, but not perfect. As you drive, the air makes its way out and the coolant level drops in the overflow bottle. I'd bet the ranch that it will drop in level for a little bit and then just stop, having expelled 100% of the air.

HT

steveberger · 04-04-2008, 11:37 AM

Quote:

Originally Posted by HondaTech

...it will drop in level for a little bit and then just stop, having expelled 100% of the air.

Exactly what happened to mine.

RidgeLI · 04-04-2008, 11:58 AM

Same here....had to top off the reservoir with a bit.....

RidgeLI

rdharper · 04-04-2008, 12:50 PM

I applaud you guys for being aware of the importance of understanding coolant level... especially in our "modern" engines.

Catch a change in coolant level pattern early... and you can avoid major engine rebuild expense. Especially in an interference engine.

BillB · 04-04-2008, 01:30 PM

Quote:

I would think that the factory does a pretty decent job of getting all the air pockets out of the cooling system, but not perfect. As you drive, the air makes its way out and the coolant level drops in the overflow bottle. I'd bet the ranch that it will drop in level for a little bit and then just stop, having expelled 100% of the air.

Thanks. I'll fill to top off line tonight and keep an eye on it. I do not see any puddles under truck, so this is a likely answer,.

zroger73 · 04-04-2008, 02:53 PM

Both my '06 Accord and RL needed to be "topped off" when they were new, but never seemed to drop after that. My '99 Regal consumed about 2 gallons of coolant (50/50 mix) in 7 years and 100,000 miles with no obvious sign of internal or external leaks (at least until the plastic intake manifold deteriorated then it ingested about a gallon in less than a day).

04-04-2008, 07:55 AM	#1
BillB ROC Rank: 2k Comma Club 2008 RTS Steel Blue / Gray Join Date: Jul 2005 Location: Long Island Posts: 2,574	Coolant disappearing This is my 2nd RL and the same symptom has occured in both trucks. At about 1000 miles on Ridgeline #2, the coolant level in the overflow tank is near empty. I have been watching it go down in level over the 1 month of ownership and am interested if anyone knows the cause of this new RL drinking problem? I am thinking of entering my 2008 in an AA program for coolant abuse.

04-04-2008, 11:58 AM	#4
RidgeLI ROC Rank: Senior 2011 RTL Polished Metal Metallic Join Date: Feb 2006 Location: Long Island, NY Posts: 746	Re: Coolant disappearing Same here....had to top off the reservoir with a bit..... RidgeLI

04-04-2008, 12:50 PM	#5
rdharper ROC Rank: Senior 2008 RT Billet Silver Metallic Join Date: Feb 2008 Location: Morgan Hill, Ca Posts: 762	Re: Coolant disappearing I applaud you guys for being aware of the importance of understanding coolant level... especially in our "modern" engines. Catch a change in coolant level pattern early... and you can avoid major engine rebuild expense. Especially in an interference engine. __________________ Richard "Science by consensus is not Science"... Harper 1988 '08 Honda Ridgeline RT 6100 miles 15.5mpg (lights and AC on, 1/4 of the miles in 1st/2nd gear) '06 Honda Rincon ATV 65 hours 20mpg '94 Toyota 4Runner SR5 3VZE 169Kmiles 14mpg '85 Toyota 4wd SR5 Long Bed PU 208Kmiles 17mpg

04-04-2008, 02:53 PM	#7
zroger73 ROC Rank: 2k Comma Club 2010 RTL Crystal Black Pearl Join Date: Jul 2007 Location: Clarksville City, Texas (near Longview) Posts: 2,387	Re: Coolant disappearing Both my '06 Accord and RL needed to be "topped off" when they were new, but never seemed to drop after that. My '99 Regal consumed about 2 gallons of coolant (50/50 mix) in 7 years and 100,000 miles with no obvious sign of internal or external leaks (at least until the plastic intake manifold deteriorated then it ingested about a gallon in less than a day). __________________ 2010 Crystal Black Pearl Honda Ridgeline RTL w/ Navigation Former daily drivers: 09 Civic, 08 G35, 07 Ridgeline, 06 Accord, 99 Regal, 98 Neon, 96 Ranger, 95 Probe, 94 Escort, 92 Grand Am, 91 Tempo, 86 Escort, 69 Skylark Former toys: 09 Silverado, 00 Cavalier, 99 B2500, 96 Cougar, 93 Cougar, 84 Fiero, 71 Ford Truck http://www.youtube.com/watch?v=mPjwc_BQhYA

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04-04-2008, 11:18 AM	#2
HondaTech ROC Rank: Senior 2007 RTL Billet Silver / Gray Join Date: Apr 2007 Location: Milwaukee, WI Posts: 740	Re: Coolant disappearing I would think that the factory does a pretty decent job of getting all the air pockets out of the cooling system, but not perfect. As you drive, the air makes its way out and the coolant level drops in the overflow bottle. I'd bet the ranch that it will drop in level for a little bit and then just stop, having expelled 100% of the air. HT

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