I Asked Diesel Repair Shop Owner What Is The Most Unreliable Diesel!

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Mods done to the Truck!
EFI Live DSP5 Switch
HSP Air Intake Kit
68mm Street Turbo Ryan’s Diesel Service
60% Injectors Bitterroot Diesel
HSP Diesel YBridge
HSP Hot Side intercooler pipe
FASS Titanium 150GPH Lift Pump
FASS Fuel Sump Kit
MBRP 3inch Turbo Down pipe
PPE Race fuel valve
Ported fuel fitting
Transgo Jr Shift Kit
Kodiak Truck Transfer Case
Kodiak Truck AAM GOV Lock11.5 Rear end
PVC Reroute
PPE Stage 5 Built Transmission
Zone off-road upper control arms
PPE Stage 3 HD Tie Rods
6" Pro-comp suspension lift kit
5100 Bilstien Shocks
35/12.50/R22 DX12 Delinte
22x14 Instigators A776 Anthem Wheels
Trail Ready Front Bumper

Music by: suncloud

#duramax #powerstroke #cummins

[TruckMaster]

What do you think is the most unreliable diesel? From this video I’m really thinking the 6.4L Powerstroke! Thoughts?

[scrappydog]

I sure do love my 5.9 12 valve. It’s just so reliable and simple. A little loud but so is the damn wife.

[fukyu]

Breaks my heart to hear a shop owner say "this is the way of the future" when I truly believe he knows that EGR's are murdering turbos. EPA shitstains traveling on private jets while us peasants are shelling out 4k to rebuild turbos every 150k miles.

[ogr]

As an original owner of a 2002 LB7, I must say because I basically left it stock (Banks CAT back and a K&N cold air filter and an Air Dog left pump), engine itself is still the 300 HP stock engine, never ever has broken down, I did upgrade the injectors in 2012, also it's the very rare twin alternator option. Love my LB7!

[markjett]

We run into these same def issues in the trucking industry regardless of truck brand, the trick is to keep ur def tank full all the time cus if u let it get low the def that coats the inside of the tank dries and flakes off and then works its way into the filters and censors cuz once def dries it never goes back to wet so imagine the dried def flake you see at the pump thats spilled clogging up ur system so if you keep it full theres less def drying and flaking.

[timothybuchanan]

Still love my 1999 7.3 have ran it for days when the power is out with a inverter to get power to my house I believe the longest period was six days still a daily driver plenty of power.Close to 1, 000, 000 miles on this old work truck.

[hsvkidusa]

I was a BIG Cummins 6 speed guy. Had 3 of them over the course of my driving career. I now have an LML dmax ('15 Denali) for about 5 years and I will say that I am impressed with how it's treated me. I.. "took care" of the cat efficiency code that came up a few times in 2019 but since that "fix" she's been golden to me. Just hit 100k and so I changed every liquid in the truck, and still runs like it was still under warranty. Now that I said that I'll report back on Monday morning 😂

[jacobvanhalteren]

I like how the main issue with the Cummins is the emissions stuff and they don't really see anything pre emissions from them

[jedpratte]

Of all the diesels I have owned I loved my pre emissions 5.9 common rail trucks. Had two 04.5. Not a lot goes wrong once the weak trans is addressed and they can make some monster power on stock rotating assembly.

[jaredmcbride]

6.4 powerstroke is the most unreliable by far. I am a ford guy but the 6.4 was for sure the worst overall

[casperhoss]

Great video, it's nice to see folks get together and share their thoughts and be open minded. It's videos like this that really help the hobby grow. As far as diesels I love the 6.2 and 6.5, especially the non turbos, to me the just sound awesome. I love the old school non emissions diesels. It would be great to have an LLY but they are few and far between, the guys that have these are very smart and know what they have and will not give them up. Here in Pa LLY's go for pretty good money. My wife and I have a 2019 L5P and we love it. We plan on installing the Banks power pack on it soon. Thanks again for another great video!

[grassblade]

I'm loving my old '93 F250 7.3 Turbo/5 spd 4x4. Great MPG, but only so-so on power. It's slow going up hill, but at least it's slow going down hill! It will pull a lot, but it's no speed demon. Straight pipe exhaust makes it sound like a big Caterpillar dozer going along, which I love!

[Deltatwo]

"deletes are a thing of the past" as I'm currently putting in my full exhaust and bench flashed ECM in my 2020 f350. 🤣👌🏼

[calvinh.]

I've dealt with a lot of diesel trucks and I found when it comes to just the factory engine, not upgraded with any aftermarket parts, the 5.9 Cummins has been the one I found to have fewer issues than any of the others. But one of my favorite engines will always be the old 7.3 Powerstrokes.

[ScottFanello]

Appreciate the honesty on the cp4 issues with the LMLs from Ryan... nothing gets inside your head more than reading on all the forums and FB groups about cp4, head gasket, and piston issues. If you treat it well and maintain it well, it'll treat you well.

[BrandonBigB]

I came from a 6.0 Powerstroke to a 6.7 Cummins and I can say I am a Cummins guy going forward, I just like how they pull. The Cummins is easy to work on, reliable and the sound is just perfect. My brother in law runs 6.7 powerstroke pickup for his grading buisness and It has been dead reliable towing 19K pound equipment around, but his big Volvo dump truck is a 11L Cummins.

[shmithys]

I will say since you mentioned it at one point we owned a 95 gmc g30 van with a non turbo 6.5 and it was at 450k the engine ran strong the van itself was falling apart but it ran strong

[justinguerra]

Awesome video! Great questions and thank you Ryan for answering and all your collective knowledge.

[stevedean]

I have a suburban with the 6.5 turbo and under 100k on it. I was going from NC to Florida pulling a 25 foot boat and lost the turbo with 400 miles to go or 400 miles home. I topped out at 55 on I95 the rest of the trip. I got 400k outta my LMM and sold it still running great and I have a LP5 now and have already been through 2 fuel injectors and pig tails on 2 and 4 before 135k.

[brandonlewis]

I still love my lly. Once I got the head issues sorted out and replaced the entire wiring harness it has been a great/ fun truck.