Offthesheet
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For best reliability and least odds of having a problem which engine do you all recommend most?
Considering a 24-25 Suburban. Which engine is most reliable?
- Thread starter Offthesheet
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PPK_
Member
I will say… the 5.3 has been around a while.. my guess is that clean-up of the blocks is now poor.. and the tooling to do the block/heads has seen better days. First figure is the 5.3 filter and what magnetic contents there are.. figure two is the first drain of my ‘24 yukon.. right block is the first drain of a ‘25 slt with a 3.0. I think the newer engine and new tooling shows a lot less issues than our older V8s.
If you really look at the middle drain oil.. there is a lot of aluminum and some iron too in the oil. Not good
I think… you do a drain at 25 hrs. I did another drain at 50 hrs it was a lot cleaner.. you have to have clean oil for an engine to last.. i think carbyte is the afm eliminator or just run in 9 gear.
And finally if had to do the yukon purchase again with 5.3 in it.. would do a 3.0.. bummer…
If you really look at the middle drain oil.. there is a lot of aluminum and some iron too in the oil. Not good
I think… you do a drain at 25 hrs. I did another drain at 50 hrs it was a lot cleaner.. you have to have clean oil for an engine to last.. i think carbyte is the afm eliminator or just run in 9 gear.
And finally if had to do the yukon purchase again with 5.3 in it.. would do a 3.0.. bummer…
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viven44
Full Access Member
Of the gas ones, 5.3 is the better choice from a reliability standpoint currently. The 6.2 engine is under investigation, as part of a fairly large NHTSA probe.
WalleyeMikeIII
Full Access Member
I believe the 3.0 is currently the most reliable. But, consider this:
I ended up investigating my own 6.2 anxiety last week.
Even found a 23 Ultimate with the duramax and considered trading
Then I asked my dealer. They said they sell 8-900 6.2’s per year. Service manager said they did 7-8 engines last year.
Shared that with the Ford dealer in town, as I also investigated the Expedition.
Ford’s service guy said “8 engines a year, we do at least that…”
Net, while the 6.2 issues are widely reported and do happen; there are a LOT of people with 6.2’s who are happily driving with no issues. Time will tell, but my guess is GM already knows why, they also know the failure rate, and as of now have not recalled anything. That tells me the problem is sub 1%. But, they do fail, and likely at a higher rate than they have in the past.
They do sell many of them a year, and 1% would be a huge number.
You will get a lot of opinions on here. Me mine is as follows, from most to least reliable:
3.0 L Duramax
5.3 L Gas
6.2 L Gas
From an economics perspective, my opinion of long term cost of ownership, from least to most:
5.3 L gas
3.0 L diesel
6.2 L gas
The latter based on increased costs for oil changes, fuel, etc. Really need to use premium gas in the 6.2. Oil and filter changes more in the last two due to higher oil volume.
For drive-ability and smile factor:
6.2L
3.0L
5.3L
Life is full of compromises.
I ended up investigating my own 6.2 anxiety last week.
Even found a 23 Ultimate with the duramax and considered trading
Then I asked my dealer. They said they sell 8-900 6.2’s per year. Service manager said they did 7-8 engines last year.
Shared that with the Ford dealer in town, as I also investigated the Expedition.
Ford’s service guy said “8 engines a year, we do at least that…”
Net, while the 6.2 issues are widely reported and do happen; there are a LOT of people with 6.2’s who are happily driving with no issues. Time will tell, but my guess is GM already knows why, they also know the failure rate, and as of now have not recalled anything. That tells me the problem is sub 1%. But, they do fail, and likely at a higher rate than they have in the past.
They do sell many of them a year, and 1% would be a huge number.
You will get a lot of opinions on here. Me mine is as follows, from most to least reliable:
3.0 L Duramax
5.3 L Gas
6.2 L Gas
From an economics perspective, my opinion of long term cost of ownership, from least to most:
5.3 L gas
3.0 L diesel
6.2 L gas
The latter based on increased costs for oil changes, fuel, etc. Really need to use premium gas in the 6.2. Oil and filter changes more in the last two due to higher oil volume.
For drive-ability and smile factor:
6.2L
3.0L
5.3L
Life is full of compromises.
