Ford Gold coolant goo/oil cooler question? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 04-14-2012, 04:34 PM Thread Starter
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Ford Gold coolant goo/oil cooler question?

The goop that gets caught in the oil cooler (not the casting sand or rust and scale), is it circulating around the coolant system as "goo" already or does it turn to goo as the coolant passes through the oil cooler when it comes into contact with the heat from the cooler? I am just trying to figure out at what point and how it actually turns to goo. Thanks

Last edited by DENALI; 04-14-2012 at 04:41 PM.
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post #2 of 8 Old 04-14-2012, 04:46 PM
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Originally Posted by DENALI View Post
The goop that gets caught in the oil cooler (not the casting sand or rust and scale), is it circulating around the coolant system as "goo" already or does it turn to goo as the coolant passes through the oil cooler when it comes into contact with the heat from the cooler? I am just trying to figure out at what point and how it actually turns to goo. Thanks
The silicate in Ford Gold eventually breaks down or falls out of suspension with excess heat. Coolant passing throught the egr cooler is subject to alot of heat and eventually over time breaks the coolant down, This is when you will see your deltas becoming an issue.

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post #3 of 8 Old 04-14-2012, 05:56 PM
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Flush the gold with fresh coolant and distiller water every 50k miles. I use the gold, but have a bullet egr cooler, stock oil cooler...not a single issue in 80kmiles

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post #4 of 8 Old 04-14-2012, 09:04 PM
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This answer the question?

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post #5 of 8 Old 04-15-2012, 10:55 AM
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Quote:
Originally Posted by DENALI View Post
The goop that gets caught in the oil cooler (not the casting sand or rust and scale), is it circulating around the coolant system as "goo" already or does it turn to goo as the coolant passes through the oil cooler when it comes into contact with the heat from the cooler? I am just trying to figure out at what point and how it actually turns to goo. Thanks
Here's my theory - Whats the BEST Stuff to use - and I'm sticking with it until there is contradictory evidence.
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post #6 of 8 Old 04-15-2012, 11:57 AM
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Good post L&B - can't believe I had missed it.

This is the closest explanation that fits all of the evidence IMO.

It explains why MANY people who still run tunes and have fully functioning EGR systems do not have issues w/ the Gold. Nitrite depletion and heat in excess of a good running system seem to be required to get the gelling.

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Last edited by bismic; 04-15-2012 at 12:57 PM.
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post #7 of 8 Old 04-15-2012, 12:27 PM
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Thanks Mark! It really pleases me that you seem to get what I was trying to say.
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post #8 of 8 Old 04-15-2012, 12:54 PM
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Thanks for posting!! I was aware that glycol based systems can break down to the acetals - just hadn't researched the mechanism or connected it w/ nitrite depletion. I was assuming it was heat based (and Ford hints at it as well - they also hint about mixing w/ combustion gasses as an issue). As said before though - that didn't explain why some folks w/ HEAVY tunes (still running the Gold and the EGR system) don't have issues. Most of the folks I know that run that way are VERY meticulous about flushing the Gold coolant at reduced intervals (keeping the nitrite levels where they should be and thus stabilize the system). I think those same folks watch their deltas (ECT vs EOT) also. Oil coolers can frequently plug from casting sand, grit, and rust particles also. The resulting reduced flow can then initiate the reaction (at more elevated temps than normal) that you talk about in a functioning EGR system. I think that my thoughts fit yours - please don't hestitate to correct or add-on if they don't.

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