gold coolant
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Postmaster
Joined: Feb 2006
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From: waynesville, mo.
gold coolant
Ask yourself this question........with all of the talk about silicate formation in the gold coolant, and changing to ELC, why isn't there a problem in the other ford engines using the gold coolant?
Hotshot
Joined: Apr 2010
Posts: 19,055
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From: Saratoga Springs,UT
Do they have small coolant path oil coolers as well????
FWIW my oil cooler didnt go bad from Gold Coolant
My oil cooler plugged with casting sand was the death of it
Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
High temps in the EGR cooler that most other engines never see. Especially the very high temps when the oil cooler begins to clog. Sort of a snowball effect. Add to that iirc Ford didn't have a "silicate free" coolant when they started selling 6.0's and the gold HOAT was on the shelf, and International uses a silicate free coolant....if your a suspicious person it don't look good.
I would add though, a lot of trucks have done just fine with the Ford Gold. It may be that those trucks never ran hot. The casting sand in the block of some engines has led to failures . I think the real key is regularly servicing and not letting the original coolant go 1k (or more) before changing it.
(shoulda said 100k miles or more above ^^^)
I would add though, a lot of trucks have done just fine with the Ford Gold. It may be that those trucks never ran hot. The casting sand in the block of some engines has led to failures . I think the real key is regularly servicing and not letting the original coolant go 1k (or more) before changing it.
(shoulda said 100k miles or more above ^^^)
Last edited by Rusty Axlerod; Aug 27, 2012 at 06:57 PM. Reason: Add
Elder User
Joined: Apr 2012
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and precipitates out stuff.
most engines aren't running a wet heat exchanger in the
coolant flow to get rid of oil heat. one with nice little
passages to plug up.
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Fleet Owner
Joined: Nov 2003
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There are LOTS of trucks that still have their EGR system and do not see the precipitation.
Vince's point is very well made. If the coolant is that bad in engines with EGR systems, then they all should behave the same way.
I believe we have multiple factors going on. I firmly believe that there has been casting sand material left in many engines. Also, Ford does say that head gasket leaks can result in the combustion gasses reacting with the coolant. Lastly, the coolant additive packages can become depleted and then there are MANY reactions that can take place. Rust formation is one of them, so is polymerization of the glycol. Silicates can drop out, but the entire charge of Ford Gold in our coolant systems contains only about 1/2 an ounce of silicates. Maybe excessive temps or high salinity dilution water play a part.
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Lead Driver
Joined: Sep 2007
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From: Scio, OR
If flash heating the Gold coolant causes silicate drop out, show it happen in a laboratory setting. It shouldn't be hard to do.
I suspect if it could be done, someone would have already done it.
I suspect if it could be done, someone would have already done it.
Logistics Pro
Joined: May 2004
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Coolant filter for 30k now. The last two I cut open had almost NO sediment. I have flushed it once and added some since a radiator change so I can attest to the gold coolant not being an issue for me. I also have not had an EGR cooler for atleast 3ok as well.
Postmaster
Joined: Oct 2007
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From: Illinois
We have a '03 6.0 approaching 400k miles in the family. It's gone thru 1 set of coolers and has had Gold coolant in it since day 1. No coolant filter either, he flushes the coolant once a year though.
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Joined: May 2004
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I had 73k on my truck and deltas over 28 deg. When I cut open the old oil cooler, it wasn't clogged, but had a scale type build up on the internal surfaces (see pics in thread below):
https://www.ford-trucks.com/forums/1...cs-inside.html
This may have caused an inability to effectively transfer heat. Perhaps this was caused by the presence of hard water in my system from the previous owner(s). I was expecting to see it clogged, but it just wasn't the case on my truck.
-Eric
https://www.ford-trucks.com/forums/1...cs-inside.html
This may have caused an inability to effectively transfer heat. Perhaps this was caused by the presence of hard water in my system from the previous owner(s). I was expecting to see it clogged, but it just wasn't the case on my truck.
-Eric
Elder User
Joined: Jul 2008
Posts: 599
Likes: 0
From: Tucker, GA
I had 73k on my truck and deltas over 28 deg. When I cut open the old oil cooler, it wasn't clogged, but had a scale type build up on the internal surfaces (see pics in thread below):
https://www.ford-trucks.com/forums/1...cs-inside.html
This may have caused an inability to effectively transfer heat. Perhaps this was caused by the presence of hard water in my system from the previous owner(s). I was expecting to see it clogged, but it just wasn't the case on my truck.
-Eric
https://www.ford-trucks.com/forums/1...cs-inside.html
This may have caused an inability to effectively transfer heat. Perhaps this was caused by the presence of hard water in my system from the previous owner(s). I was expecting to see it clogged, but it just wasn't the case on my truck.
-Eric
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Postmaster
Joined: Feb 2006
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From: waynesville, mo.
Lets look at this one............Theres the same amount of exhaust gas going to the cooler, failed or not. Flash heating shocks the coolant? Thats why the cooler failed, lack of coolant flow! So how can it shock the coolant?
Elder User
Joined: Jul 2008
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From: Tucker, GA
Well the theory is that it shocks the coolant before the oil cooler completely clogs, when there's still coolant flowing through it to the EGR cooler. Like was said, it's a snowball effect - once it starts clogging it progresses fast.