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7.3 Godzilla Engine Failure Thread, Post Them Here

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Old Jul 12, 2023 | 10:17 AM
  #16  
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My '22 has been on synthetic since it's first oil change at 2000 miles and is over 67k now. I use it for all kinds of things from plowing, towing, hauling, road tripping. It has not needed a single repair with the exception of a failed battery last month. Never seen the inside of a dealership since it left Indiana 20 months ago.
 
Old Jul 12, 2023 | 11:46 AM
  #17  
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Originally Posted by GAZZILLA
How did you guys notice it was leaking, did it drip on the ground or did you have to crawl underneath it to see it?
I noticed oil spots on the driveway, had a slow drip while running and of coarse if you went under you could see it clearly. I became aware of it by oil spots on the driveway.

I went to look at a used motorcycle last week, the current owner was a tech at the Ford dealer for the last 2 years. I asked if he's seen any lifter issues or any common issues with the 7.3L in general. He said he has not.

They sell a lot of superdutys there(oil patch town) but not sure how may are 7.3L
 
Old Jul 12, 2023 | 12:05 PM
  #18  
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Originally Posted by JayCarver
I noticed oil spots on the driveway, had a slow drip while running and of coarse if you went under you could see it clearly. I became aware of it by oil spots on the driveway.

I went to look at a used motorcycle last week, the current owner was a tech at the Ford dealer for the last 2 years. I asked if he's seen any lifter issues or any common issues with the 7.3L in general. He said he has not.

They sell a lot of superdutys there(oil patch town) but not sure how may are 7.3L
I was on a Ford dealer lot Katy Autonation a few weeks ago and I counted 55 Super Duty's and only seen 2 with the 7.3.
 
Old Jul 12, 2023 | 12:18 PM
  #19  
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Originally Posted by FishOnOne
I was on a Ford dealer lot Katy Autonation a few weeks ago and I counted 55 Super Duty's and only seen 2 with the 7.3.
Not at all surprising.
 
Old Jul 12, 2023 | 12:40 PM
  #20  
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Originally Posted by redford
That takes me back to the late 1970s, when I was told synthetic oil is “too slippery” for American engines. Supposedly, the stuff will just run past your rings, valve seals, and gaskets.

I'm a big fan of synthetic and use it in everything I run. But.... I did have a '76 Pontiac Astre in college. It could not run synthetics without burning tons of it. The car always burned a little conventional oil, but synthetic went through it way, way faster. I've know people running older boats that have had similar issues. I don't blame that on the oil, just noting it as a point of order.
 
Old Jul 12, 2023 | 01:11 PM
  #21  
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Originally Posted by FishOnOne
I was on a Ford dealer lot Katy Autonation a few weeks ago and I counted 55 Super Duty's and only seen 2 with the 7.3.
When I bought mine they had 13 Super Duty's and the only 7.3 was the one I bought.
 
Old Jul 12, 2023 | 01:52 PM
  #22  
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Originally Posted by redford
That takes me back to the late 1970s, when I was told synthetic oil is “too slippery” for American engines. Supposedly, the stuff will just run past your rings, valve seals, and gaskets.
I remember that. Oil was going to leak out of everywhere on the engine because it was too thin.
 
Old Jul 12, 2023 | 02:45 PM
  #23  
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Ok hopefully this doesn't turn into another oil discussion.... Lets stay on task here. @ 49k miles now, front main seal was repaired @30k. Yes you can easily tell leaves small puddle every 12 hours after parked. No other issues. factory oil and filter every 5k
 
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Old Jul 12, 2023 | 03:32 PM
  #24  
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Originally Posted by OBS460
You mean the guy who claims synthetic oil is what is killing our engines?
That’s not exactly what he said. He said synthetic wasn’t the best for every application on the 7.3 engine. His opinion was that in some uses, it could cause some harm. Just his opinion from experience working on the engines. Also pretty sure he said it’s new and too early to tell completely. Just how I read it.
 
Old Jul 12, 2023 | 04:07 PM
  #25  
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Originally Posted by Jo7.3
As someone who was born in the late 90s, I've always thought it would be pretty cool to go back and see what the 70s were like (ya know, assuming time travel was possible). However, hearing things like this and then seeing people from back then saying America was turning into a communist country when drinking and driving was made illegal REALLY makes me wonder what the 70s were like.
As someone who lived through the 1970's (graduated from college in 1975) and is still of relatively sound mind I can tell you with a decent degree of credibility that the 1970's had some downside and I'll be the first to acknowledge those downside's but as a whole it was FAR & AWAY a better time to grow up and live. Respect, courtesy, consideration along with basic honesty were in much greater supply and prevalence than in the world of your time and youth. At least it was where I come from.

Drinking & driving was always illegal where I am from and most definitely throughout the 1970's. I will concur that driving impaired was not as strictly enforced as it is today but it was, without question, illegal. I was never aware of anyone with an ounce of functioning gray mater who equated enforcement of impaired driving laws to be some communist plot to overthrow the government. We all have our time and nostalgia is a human condition that nearly everyone holds dear but having seen then and now there is little doubt that, as a whole, the 1970's were a very good time to be alive in the good ol' U.S. of A.
 
Old Jul 12, 2023 | 04:44 PM
  #26  
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Originally Posted by jcb206
That’s not exactly what he said. He said synthetic wasn’t the best for every application on the 7.3 engine. His opinion was that in some uses, it could cause some harm. Just his opinion from experience working on the engines. Also pretty sure he said it’s new and too early to tell completely. Just how I read it.
I'm almost positive he said that all of the 7.3 failures have one thing in common and it's that they were all maintained with synthetic oil and that synthetic oil crystallized on cold starts.
 
Old Jul 12, 2023 | 04:50 PM
  #27  
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Originally Posted by jcb206
That’s not exactly what he said. He said synthetic wasn’t the best for every application on the 7.3 engine. His opinion was that in some uses, it could cause some harm. Just his opinion from experience working on the engines. Also pretty sure he said it’s new and too early to tell completely. Just how I read it.
Originally Posted by CLJDieseltech
Whats happening with the lifters is a process called spalling. Spalling is a process of metal surface failure where the metal breaks down into small flakes. Many potential reasons for this, cavitation, excessive roller pressure, lack of lubrication...etc. Its a major problem that is pretty wide spread at this point. Its similar to what you might see with wheel bearing failure if you've seen that before.

The use of synthetic oil is consistant in most if not all of the cases. Interesting how syn oil is consitant with both the cylinder failures and the lifter failures. Especially when the average customer doesnt care which oil the dealer puts in it. All that said, continue to use synthetic...the more cases the better. Just means Ford will need to address the issue sooner.
 
Old Jul 12, 2023 | 04:51 PM
  #28  
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Originally Posted by KenRebF-250
As someone who lived through the 1970's (graduated from college in 1975) and is still of relatively sound mind I can tell you with a decent degree of credibility that the 1970's had some downside and I'll be the first to acknowledge those downside's but as a whole it was FAR & AWAY a better time to grow up and live. Respect, courtesy, consideration along with basic honesty were in much greater supply and prevalence than in the world of your time and youth. At least it was where I come from.

Drinking & driving was always illegal where I am from and most definitely throughout the 1970's. I will concur that driving impaired was not as strictly enforced as it is today but it was, without question, illegal. I was never aware of anyone with an ounce of functioning gray mater who equated enforcement of impaired driving laws to be some communist plot to overthrow the government. We all have our time and nostalgia is a human condition that nearly everyone holds dear but having seen then and now there is little doubt that, as a whole, the 1970's were a very good time to be alive in the good ol' U.S. of A.
No PC's or cell phones is what I liked best. about the 70's

Did you absolutely need to make a phone call? Pull over and use the pay phone, only a dime.

 
Old Jul 12, 2023 | 06:10 PM
  #29  
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Due to the lack of 7.3 failures this thread is now becoming a thread about politics and oil.

I guess that’s good in a way!
 
Old Jul 12, 2023 | 06:14 PM
  #30  
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Originally Posted by OBS460
I'm almost positive he said that all of the 7.3 failures have one thing in common and it's that they were all maintained with synthetic oil and that synthetic oil crystallized on cold starts.
Most, if not all. But he was just stating his experience. Considering most people I know run Full Synthetic, I bet most of their problems happen when they run full synthetic too.

I’m not an expert at all. Just stating how I thought he explained his thoughts.

Still waiting for a great 7.3 gas oil debate thread to see which I will run. First N/A engine in 8 years and didn’t tow before then and never asked what Ford put in there.

 



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