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They are just called "O-Ring Boss" (ORB) fittings.

I'm still going by the logic that it's simply the age of the line that is the problem. It's not that it's an "oil line of death", or bad design, because obviously they lasted the first 25 years of the truck. This is just a critical oil-pumping point, and any line here that fails will pump out...

Maybe, but if the engine is that close to death already anyways is it really any different? In another 20 seconds the engine will die because of lack of oil, and you'll be in the exact same boat. I don't really buy it. But if you do believe that, hook it to a big red "tach shift light" on...

I don't think it controls anything like that now. I believe it just signals the alternator when the engine has made pressure and the alternator can start charging. But if you wanted it to shut down, you could tap off it.

There is already an oil pressure switch on the engine.

While that is true, they can flow less. Soft lines flow significantly less, even when straight and round, but then are generally bent. This leads them to be deformed and even more restrictive than hard lines also. This is why all the military soft lines are oversized for the fitting (e.g. 1"...

If you haven't fixed your other problems, of course you're going to continue to break stuff. Had he not broke the oil line again, he would have cracked the front aluminum housing next.

The problem with a flexible line isn't the likelihood of the connector failing, it's that flexible lines don't flow as well as a solid line so you have to oversize it. People usually don't know that, or forget to consider it. For a mass-production application, the hard line is an appropriate...

You're right, it is a short run. I still recommend using a larger line if you can. If you know a flexible line of the same size is going to reduce flow some amount, and you don't know what long term effects that may have, why chance it? That's a good example you gave though. Maybe cut a...

I think you might be reading it backwards, which is why I was trying to phrase it as "metal tube" and "flexible hose", not just "tube" and "hose". The metal tube has the more consistent ID. Basically everything is better about metal tubing, except that it isn't flexible, so you should always...

A lot of the suggestions/ideas being made here are not well informed. Solid tubes are better at most things (which is why they put it there in the first place). If your compressor isn't loose, and the tube isn't corroded, it's not likely to fail, and the metal tube is a good choice. The few...