Gas vs PSD
Hotshot
Joined: Dec 2006
Posts: 14,069
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From: Melbourne, Ky
Jet and internal combustion engines are totally different. What my neighbor said was the type of oil used in those engines was so far superior to what the general public has available for their own vehicles. Understand I'm talking 25 years ago. I think he used mobil 1 oil too, but I might be wrong.
Elder User
Joined: May 2010
Posts: 650
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From: WV
Jet and internal combustion engines are totally different. What my neighbor said was the type of oil used in those engines was so far superior to what the general public has available for their own vehicles. Understand I'm talking 25 years ago. I think he used mobil 1 oil too, but I might be wrong.
Posting Guru
Joined: Aug 2008
Posts: 2,313
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From: Sunny, Snowy, CO
Jet and internal combustion engines are totally different. What my neighbor said was the type of oil used in those engines was so far superior to what the general public has available for their own vehicles. Understand I'm talking 25 years ago. I think he used mobil 1 oil too, but I might be wrong.
Senior User
Joined: Jun 2007
Posts: 367
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PSD v. V10.
My F250 CC, LB has a 6.0. My wife's EX has the V10.
The V10 is a rocket out of the hole, the 6.0 a little slower.
However, we have towed our quad trailer to the same mountain location several times with both the PSD and the V10.
With the V10 I watch the speed drop and the gears drop trying to get up the hills. The PSD pulls the same hills with no noticable speed drop and no down shifting.
I love them both; but for me it's the PSD.
My F250 CC, LB has a 6.0. My wife's EX has the V10.
The V10 is a rocket out of the hole, the 6.0 a little slower.
However, we have towed our quad trailer to the same mountain location several times with both the PSD and the V10.
With the V10 I watch the speed drop and the gears drop trying to get up the hills. The PSD pulls the same hills with no noticable speed drop and no down shifting.
I love them both; but for me it's the PSD.
Elder User
Joined: May 2010
Posts: 650
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From: WV
The M1A2(SEP) (It's a tank) uses a jet engine, so my jet engine experience is limited...However, it uses an oil filter not much bigger than the one on my truck. The turbine (aka jet) engine only has 2 moving parts which are the high pressure and low pressure compressors. Literally, it's only ONE moving part that needs lubricated, minus the AGB. There is no blow by as the continuous burn portion takes place well after the compressors. If the engine doesn't blow up, (which they always seem to do) in theory, you could go years without changing the oil in it. However, when they get mired up to their turrets (stuck) they usually flood the engine and they have to drain the AGB (Auxiliary Gear Box) and engine (compressor section) which is what gets lubed by the tiny little oil pump on the AGB. As far as the oil used, it uses a regular 15W40 for the engine. The Hydraulic fluid is some of the nastiest stuff on the planet.
Thread Starter
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Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
PSD v. V10.
My F250 CC, LB has a 6.0. My wife's EX has the V10.
The V10 is a rocket out of the hole, the 6.0 a little slower.
However, we have towed our quad trailer to the same mountain location several times with both the PSD and the V10.
With the V10 I watch the speed drop and the gears drop trying to get up the hills. The PSD pulls the same hills with no noticable speed drop and no down shifting.
I love them both; but for me it's the PSD.
My F250 CC, LB has a 6.0. My wife's EX has the V10.
The V10 is a rocket out of the hole, the 6.0 a little slower.
However, we have towed our quad trailer to the same mountain location several times with both the PSD and the V10.
With the V10 I watch the speed drop and the gears drop trying to get up the hills. The PSD pulls the same hills with no noticable speed drop and no down shifting.
I love them both; but for me it's the PSD.
Your comparing Your 6.0 to an older V10 with less power.
Senior User
Joined: Jun 2007
Posts: 367
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Maybe true; my 6.0 is a 2003 and the EX is a 2005. The 6.0 has 135K, V10 has 35K.
The 6.0 gets 15 mpg, the EX gets 10 mpg. These are just my experiences.
Still, for me, the PSD; you do have a better chance talking me into a V10 before you could ever talke me into a Chevy!
The 6.0 gets 15 mpg, the EX gets 10 mpg. These are just my experiences.
Still, for me, the PSD; you do have a better chance talking me into a V10 before you could ever talke me into a Chevy!
Posting Guru
Joined: Aug 2008
Posts: 2,313
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From: Sunny, Snowy, CO
You know, honestly, I do not know. We ran the same oil in ALL of the vehicles, and it cam from Chevron usually. I don't believe it was a full synthetic. they have heat shields on them everywhere, and you can work on the AGB directly after pulling the FUPP out of the tank. The compressor section really doesn't get THAT hot either. The recuperator does, but it doesn't have any moving parts per se...
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Postmaster
Joined: Oct 2006
Posts: 4,171
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From: SE Texas
JL
Posting Guru
Joined: Aug 2008
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From: Sunny, Snowy, CO
Elder User
Joined: May 2010
Posts: 650
Likes: 0
From: WV
You know, honestly, I do not know. We ran the same oil in ALL of the vehicles, and it cam from Chevron usually. I don't believe it was a full synthetic. they have heat shields on them everywhere, and you can work on the AGB directly after pulling the FUPP out of the tank. The compressor section really doesn't get THAT hot either. The recuperator does, but it doesn't have any moving parts per se...
Elder User
Joined: May 2010
Posts: 650
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From: WV
It's more like a combination of many things, including forced induction, that makes it superior. If it was a matter of just slapping a turbo on, we would have gas powered tractor-trailers running everywhere.
Postmaster
Joined: Oct 2006
Posts: 4,171
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From: SE Texas
Forced induction via a turbocharger is the key reason a turbodiesel is able to pull a load at 2000rpms down the highway and maintain speed without having to downshift.Increasing boost into the intake tract has the exact same result as increasing displacement by that same amount of airflow. Gasoline,Diesel,Propane,Nat Gas,etc,etc...the fuel does not matter-you'll get the same result every time. As boost increases,so does power and torque. A vehicle's ability to maintain speed under load is directly proportional to the amount of boost that the engine receives from the turbocharger, etc. If the turbo isn't the key, then why aren't there any N/A diesel tractor-trailers out there? Why don't the automakers have N/A diesels in their trucks anymore?
I know it's not a simple as slap a turbo on anything and go-the entire fuel and induction system must be designed for that purpose, and/or modified for that use.
JL
Senior User
Joined: May 2004
Posts: 407
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From: Humble, Texas
Comparing jet engines to internal-combustion piston-based engines is an apples-to-oranges thing.
The byproducts of combustion (gases, acids, carbon, etc) wind up in the crankcase of a conventional piston engine.
In jet engines, yes, they get HOT, but the oil is not contaminated over time with the products of combustion.
No matter what you do, an internal combustion engine's oil WILL get contaminated, and no matter what off-the-shelf filter you use, it can't remove all the contaminants.
The byproducts of combustion (gases, acids, carbon, etc) wind up in the crankcase of a conventional piston engine.
In jet engines, yes, they get HOT, but the oil is not contaminated over time with the products of combustion.
No matter what you do, an internal combustion engine's oil WILL get contaminated, and no matter what off-the-shelf filter you use, it can't remove all the contaminants.
So are you saying that the longer stroke has nothing to do with superior torque of a diesel?
Postmaster
Joined: Oct 2006
Posts: 4,171
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From: SE Texas
4.13 vs 4.165.
The 7.3L does have a longer stroke, 4.18.
JL