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Where could my anti freeze be going to. .?

Printed From: Unofficial Allis
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Forum Name: Shops, Barns, Varmints, and Trucks
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=151679
Printed Date: 21 Aug 2025 at 2:12pm
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Topic: Where could my anti freeze be going to. .?
Posted By: darrel in ND
Subject: Where could my anti freeze be going to. .?
Date Posted: 30 Jun 2018 at 5:57pm
I seem to have a lot of anti freeze disappearing out of my 01 suburban with the 8.1 engine in it. Like about a half gallon every 100 miles. I haven't investigated thoroughly yet, but it's not going into the oil, which is good news. I am pretty certain that it's not going into any of the cylinders, because there is not a trace of white smoke. I've had it sitting on a concrete pad all day a couple times, and there is not a trace of a puddle under it. Kind of be-fuddling me. Any ideas. ..? Thanks, Darrel



Replies:
Posted By: DiyDave
Date Posted: 30 Jun 2018 at 6:37pm
Bad cap, hose, overflow tube or tank.  Or the REAL bad news, tiny hole in head or gasket...Cry


Posted By: Brian Jasper co. Ia
Date Posted: 30 Jun 2018 at 8:37pm
Cracked heads or leaking headgaskets. Common problem with them

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford


Posted By: DanWi
Date Posted: 30 Jun 2018 at 9:06pm
Waterpump.


Posted By: johnkc
Date Posted: 30 Jun 2018 at 10:18pm
Small radiator leak. The AF evaporates too quick to drip.

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I support the development of hybrid automobiles and alternative fuels as I need DIESEL fuel for my ALLIS CHALMERS!


Posted By: steve(ill)
Date Posted: 30 Jun 2018 at 10:24pm
put a bottle of BARS LEAK COPPER - gasket sealer in the system.. don't have to remove the antifreeze... will seal up in a couple days.

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Like them all, but love the "B"s.


Posted By: thendrix
Date Posted: 01 Jul 2018 at 2:23pm
Check the bottom side of the water pump. GM is known for needing water pump gaskets every so often. Last Silverado I had wasn't leaking enough to see it anywhere but I could smell it every now and then. Got to looking and I found a wet streak from the left side water pump gasket

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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan


Posted By: Walker
Date Posted: 01 Jul 2018 at 5:09pm
When you find the trouble advertise it as one of them water burning carburetors that will increase gas mileage considerably.


Posted By: Lars(wi)
Date Posted: 01 Jul 2018 at 5:11pm
My '95 with the 350 did exactly that, one jar of Bars Leaks, and problem solved/delayed!


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I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.


Posted By: Johnwilson_osf
Date Posted: 01 Jul 2018 at 8:36pm
I have an 04 and and 03 Chevy, and both use coolant.  They especially use it in the winter.  I was told that these engines used different metals on the various parts/gaskets, and they dont seal well. 


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Allis Express: Eastern PA on Rt 80
8050, 8010, 6080, 190, D14, DA 6035, AA 6690, 5650, Gleaner F2


Posted By: desertjoe
Date Posted: 02 Jul 2018 at 5:03am
 Hey Darrel,,,one would think that the engine would have a definate miss with that much coolant getting into the combustion chambers,,,which is prolly where it is disappearing to,,,,I know it's not what you want to hear but I've seen too many with that issue. 
  The sure fire "fix" is to get a compression check to see,,,# 1. which cylinder and #2. which bank the leak is on, then a tear down to see what the issue is. I wouldn't use any Stop Leak cause it tends to plug up ,,,other things,,,, Good Luck.Clap


Posted By: truckerfarmer
Date Posted: 02 Jul 2018 at 6:31am
Not sure about the 8.1, but the 5.3 are notorious for the intakes warping. They usually leak at the back, so it it runs on to the transmission and evaporates, so you probably won't see a puddle on the ground. My 2000 GMC started loosing water. I consulted a mechanic friend of mine, and he said the only way to fix it is to plane the intake. With labor that would cost around $600. Or he suggested adding a $10 bottle of Mendtite. That was 50,000 miles ago. Still no leaks. Wife's 05 Yukon had same problem. I've added a bottle to hers twice in 5 years.


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Looking at the past to see the future.
'53 WD, '53 WD45, WD snap coupler field cultivator, #53 plow,'53 HD5B dozer

Duct tape.... Can't fix stupidity. But will muffle the sound of it!


Posted By: DiyDave
Date Posted: 02 Jul 2018 at 5:52pm
The stuff I swear by is Blue Devil Block sealer.  Just pour in, and follow the directions, on the bottle.  Sealed up a kuboter block, so I tried it on my dodge duckoder...

No leaks, so far...Thumbs Up


Posted By: Ted J
Date Posted: 02 Jul 2018 at 8:39pm
HOW the heck am I going to remember all them different kinds of pluggers when I need em? LOL


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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17


Posted By: shameless dude
Date Posted: 02 Jul 2018 at 10:03pm
you don't Ted....why waste good money on them old ferds?


Posted By: shameless dude
Date Posted: 02 Jul 2018 at 10:11pm
Darrel...I hopes it's nothing serious, gotta keep that old gal going, it's a fine machine! a tough sucker too!


Posted By: Coke-in-MN
Date Posted: 02 Jul 2018 at 10:24pm
well if all else fails Flax Seed Meal - can find it at a drug store or health food store - any extra you can put on your breakfast cerial 



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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.


Posted By: Tbone95
Date Posted: 03 Jul 2018 at 7:56am
Did it come with Dexcool?  And if so, did you change the  coolant as recommended, or change it to something else?  If not, when it degrades, it will eat the aluminum right out from under the head gaskets.


Posted By: Brian Jasper co. Ia
Date Posted: 04 Jul 2018 at 1:00pm
Originally posted by truckerfarmer truckerfarmer wrote:

Not sure about the 8.1, but the 5.3 are notorious for the intakes warping. They usually leak at the back, so it it runs on to the transmission and evaporates, so you probably won't see a puddle on the ground. My 2000 GMC started loosing water. I consulted a mechanic friend of mine, and he said the only way to fix it is to plane the intake. With labor that would cost around $600. Or he suggested adding a $10 bottle of Mendtite. That was 50,000 miles ago. Still no leaks. Wife's 05 Yukon had same problem. I've added a bottle to hers twice in 5 years.
Not on any of the LS variants. All of them have dry plastic intakes.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford


Posted By: LionelinKY
Date Posted: 04 Jul 2018 at 10:02pm
I had the same issue with my 1996 S10 the 1st time the head gasket went bad. I was smelling coolant for months and occasionally having to top off the reservoir tank but NEVER saw a puddle anywhere. Took me months to figure out that the head gasket was leaking slowly off the back of the block and the coolant was actually dripping right onto the exhaust system. Leak never really got any worse but I tired of smelling and adding coolant all the time so eventually I had the head gasket replaced. The same thing has happened again 2 more times since then. About every 90K miles, the head gasket starts leaking again in the same spot and always to the outside thankfully. Only problem that I have ever really had with the truck. It is now pushing 291K miles on the rest of the original engine-just new gaskets occasionally-LOL.

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"My name is Lionel and I'm an Allisoholic"


Posted By: shameless dude
Date Posted: 05 Jul 2018 at 12:32pm
you finds it yet Darrel?


Posted By: darrel in ND
Date Posted: 07 Jul 2018 at 7:34am
Originally posted by shameless dude shameless dude wrote:

you finds it yet Darrel?

No I haven't. I put a bottle of bars leak copper in it, and it is still disappearing, but at a slower rate. I wish now that I hadn't put that bars leak in there. I am sure that I have an external leak somewhere, because I can always smell anti freeze when I stop and get out, and there is an area around the passenger side that is always wet with anti freeze. Darrel


Posted By: shameless dude
Date Posted: 08 Jul 2018 at 9:51pm
I spose you wanna buy my '02 burb now huh?


Posted By: Coke-in-MN
Date Posted: 08 Jul 2018 at 10:25pm
Had that on a old suburban - I took and pressurised system up to 15 PSI - found it right away then - wwas a crack on one of the heater core inlet pipes , fixed it without taking the core out - 

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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.


Posted By: darrel in ND
Date Posted: 09 Jul 2018 at 5:37am
Originally posted by shameless dude shameless dude wrote:

I spose you wanna buy my '02 burb now huh?


Naw, we are about burbed out. Thus one is our fifth one, and they have all been nice rides, but the kids are all grown up now, so it's very rarely that we need a vehicle like a burb. So I think that when this one dies, there won't be any more burbs at our house. Darrel


Posted By: shameless dude
Date Posted: 09 Jul 2018 at 2:13pm
that's a WRONG tude! there's only 2 of us and we gots a newer one, also kept the older one, nothing wrong with it cept sum rust. and gosh forbid if she hasta drive anything with a little rust on it! PfffffT!


Posted By: LionelinKY
Date Posted: 11 Jul 2018 at 1:07am
Originally posted by darrel in ND darrel in ND wrote:

 
there is an area around the passenger side that is always wet with anti freeze. Darrel
 
This area that gets wet on the passenger side is inside the vehicle or underneath the vehicle? Wet spot of anti-freeze inside a vehicle on the passenger side is a good indicator that your heater core has sprung a leak. Could still be heater core leak even if coolant is leaking outside but still on passenger side. Just depends on where the coolant leaks out of the compartment after it has exited the heater core itself.


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"My name is Lionel and I'm an Allisoholic"


Posted By: darrel in ND
Date Posted: 11 Jul 2018 at 6:15am
Lionel, Inside the front wheel well behind the tire, and on the fire wall. I haven't had a chance to do any more investigating on it now, though for a while. Darrel


Posted By: truckerfarmer
Date Posted: 11 Jul 2018 at 6:31am
Might wanna consider replacing heater hoses. Or, at the least, check the hose clamps. Shouldn't cost more than $20-30 to replace hoses and clamps.

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Looking at the past to see the future.
'53 WD, '53 WD45, WD snap coupler field cultivator, #53 plow,'53 HD5B dozer

Duct tape.... Can't fix stupidity. But will muffle the sound of it!


Posted By: DanWi
Date Posted: 11 Jul 2018 at 1:45pm
My 99 yesterday smelled of antifreeze and I topped it off in the morning, we were using it to haul a gooseneck with big squares out of the field popped the hood and one of the plastic tanks on the radiator has a crack near the top and leaks when it gets hot. Telling the SIL about it and he said his suburban now is leaking by the water pump but runs down and along side the oil pan rail and drips off the back of the block.



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