I'm using Peak Long Life, a dexcool clone, in my 1988 Mustang GT. It has been in there for just over a year now, no problems.
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Dex-Cool ate the intake gasket in my GMC Yukon. It also ate the oil cooler in my wife's Saturn V6. Both cars have green antifreeze in them now and have a lot more miles than when they ran with the orange junk. We'll be buying a new SUV next month and I'll be changing antifreeze but quick.
Dex had zero to do with your yukons intake gaskets failing. I can guess the plastic carrier cracked where the silicon seal was imprinted and caused it to shift. I have changed over 5 sets of these gaskets on different vehicles and it is usually the same thing everytime. Now and then you actually get a failure at the intake valve area and use oil like mad.
Go ahead and change the anti-freeze but it is my guess you will void the warranty on the cooling system.
Orange junk...No it is like perfom preventive maintenance. With the intake gaskets that was bad engineering on GM's part.
If Dex is so bad how do you explain the thousands of vehicles on the road with zero problems?
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" That and bad design. As the picture displays the carrier split at the port. This gasket was torqued to Fel-Pro specs 2.5 years ago. Thes gaskets replace the OEM. "
So is this a picture of a Fel Pro gasket ?And if so , why did it fail after 2.5 years ?![]()
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Know what? It's a free country and if I refuse to use Dex Cool, then dammit I can put green antifreeze in my cars. I don't fix cars for a living, so I'm not forcing my feelings on any innocent people.
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My Yukon is a 98 with a Vortec 5.7. At the time of gasket failure, it had about 75,000 miles on it. The front driver's side corner was seeping coolant out. The plastic was bot cracked, oil was not getting into the port. I swapped it with a Fel Pro gasket and now I have 183,000 miles.
The Saturn is a 2001 with the european 3.1 V6. It's an overhead cam engine with a liquid to liquid oil cooler between the heads. The cooler failed at 60,000 miles, I bypassed it, installed an air to oil cooler and now that car has 95,000 on it. This engine is a total pain to care for and the dealer chuckled when I told the service manager what engine was in the car.
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3 I also add the prestone anti-rust additive every 2 years. Easy peasy.![]()
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3 Suburbans, 1 YukonXL, 4 GM 7.4L Merc engines all on Dex-Cool for years...never a problem. I siphon off a quart every year and replace it with new. I also add the prestone anti-rust additive every 2 years. Easy peasy.![]()
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NYE,
Your 2002 ?? ( with an initial release date of mid 2002 ?? } Saturn Vue has a TSB for " New oil Cooler Cover Sealant " ( Date 1 MAY 2002 which covers it - it really wasn't your coolant ( bad/wrong sealant ) .![]()
As to the Yukon/your year/engine , so far I haven't found anything like that problem - even remotelyso must have been service/component/system problem of another sort . Sounds like it got hot .![]()
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NYE,
Your 2002 ?? ( with an initial release date of mid 2002 ?? } Saturn Vue has a TSB for " New oil Cooler Cover Sealant " ( Date 1 MAY 2002 which covers it - it really wasn't your coolant ( bad/wrong sealant ) .![]()
As to the Yukon/your year/engine , so far I haven't found anything like that problem - even remotelyso must have been service/component/system problem of another sort . Sounds like it got hot .![]()
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Know what? It's a free country and if I refuse to use Dex Cool, then dammit I can put green antifreeze in my cars. I don't fix cars for a living, so I'm not forcing my feelings on any innocent people.
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NYE,
Your 2002 ?? ( with an initial release date of mid 2002 ?? } Saturn Vue has a TSB for " New oil Cooler Cover Sealant " ( Date 1 MAY 2002 which covers it - it really wasn't your coolant ( bad/wrong sealant ) .![]()
It's NOT a Vue. It's an L300 sedan. It has a 3.1 litre V6 that I would guess came from england because they keep calling it the European V6. They no longer use it. I can only imagine because it requires a degree to take care of it. The oil cooler is inside the engine immersed in coolant. It failed at the core. One day, suddenly, oil started coming out the coolant cap. I searched for an oil cooler, followed the lines and found it under the intake manifold. I used to service Cat, Cummins and Detroit Diesel generators. I've seen dozens of failed oil coolers from engines that didn't receive proper coolant care. I fabricated plugs to seal the block and added an external cooler because the replacement was 600 bucks and I don't like that car that much.
As to the Yukon/your year/engine , so far I haven't found anything like that problem - even remotelyso must have been service/component/system problem of another sort . Sounds like it got hot .![]()
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