What is/are the most reliable engines ever made?

Mitchi

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Alright, I've been discussing this with a couple of friends today.
I'm thinking that this is going down in the random thoughts thread, so it gets its own.

What do you guys think are the most, if not the most reliable engines ever?

Not wanting to throw in specific engines, but a few examples:

Old Benz diesel?
LSx?
Mazda's engine in the Miata? Those seem to go on for ever. (Well, maybe not BlaRos', but still...)
Other japenese engines, Honda?
Volvos?
Soviet stuff?

I just want to have a nice discussion, maybe make some sort of list out of it.
Any reply is welcome.
 
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Toyota engines in general with some exceptions... some of their diesels have had embarrassing issues over the last decade or so.
Benz diesels, at least until they started to slap CDI badges on them. They're not bad nowadays either, but nothing spectacular imo.
 
My vote would go towards OM601, I've driven several that have done more than 1 million kilometers.
 
Ford Model T 4 cylinder.

View attachment 16023

Nearly indestructible. At least the ones with water pumps.
 
Chrysler Slant Six.
6.9/7.3 IDI/Powerstroke.
 
Basically, anything overbuilt and understressed. /thread
 
Basically, anything overbuilt and understressed. /thread

Pretty much. Not having a legacy of a displacement tax helped the U.S. here. The average European car needed to be 1cc and produce 90hp.
 
Ford 300 straight six
AMC/Jeep 4.0

On the motorcycle side, Honda's flat sixes in the GL1500 and GL1800 don't seem to have any expiration date either.
 
Steam engines. Some ran for decades nearly non stop from day one.
 
Electric engines are supposedly good at this, aren't they?
 
If I missed it, I apologize, but small block Chevrolets and Fords. I've seen both just keep on keeping on despite bad maintenance, abuse and nitrous.

Ford 300 straight six

We actually killed one of these. Of course it had unknown miles and just finally lost compression. We had non-fowlers in three cylinders, just trying to limp it along.
 
the toyota UZ, one of the only car engines you're allowed to put in a plane
 
Was just coming to post that. Specifically the 1UZ-FE. Special mention also goes to the 2JZ-GE and the 2L diesel.
 
Electric engines are supposedly good at this, aren't they?

There is no such thing as an electric engine. They are called motors. /pedantic
 
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