Oil recomendation
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Junior User
Joined: Apr 2007
Posts: 68
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From: Sountern Indiana
Oil recomendation
I brought a 1996 7.3 liter powerstroke diesel with 407,000 miles and I freshly rebuilt it and I was wondering what type of oil to use in it to make it last just as long again. I changed the oil in it every 3,000 miles and used rotella oil is this ok. I only got to change the oil 3 times before it gave out on me
Cargo Master
Joined: Dec 2006
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From: Central NY
Postmaster
Joined: Mar 2001
Posts: 4,968
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From: So Cal
Rotella and Delo have excellent reputations with the diesel crowd. You won't go wrong especially if you change at 3K.
I personally use syn in all my gas engines, but it is mostly a religious and "believeing the hype" issue. Make sure the oil is rated for diesels since they have a very different requirement from gassers. This is especially true if your injectors are oil activated. THe newer Powerstrokes use oil in their injectors, a non diesel oil will foam which is bad for engines. So use a good diesel oil.
Good Luck,
Jim Henderson
I personally use syn in all my gas engines, but it is mostly a religious and "believeing the hype" issue. Make sure the oil is rated for diesels since they have a very different requirement from gassers. This is especially true if your injectors are oil activated. THe newer Powerstrokes use oil in their injectors, a non diesel oil will foam which is bad for engines. So use a good diesel oil.
Good Luck,
Jim Henderson
Post Fiend
Joined: Feb 2007
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From: Rural WV
While I don't disagree with the others....I've found that the Motorcraft at my local auto parts place is cheaper than my other alternatives. I don't have a wally world in my community....the closest one is almost an hour away so why drive the distance when I can get the Motorcraft right here...and nobody can gripe about the oil if I have warranty issues.
When I drove rigs, we used the Rotella exclusively so I know it's not a bad oil.
When I drove rigs, we used the Rotella exclusively so I know it's not a bad oil.
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Junior User
Joined: Feb 2006
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From: Hampton Falls, NH
I like the Castrol GTX made specially for diesels. Its what I run through my 6.0 every 4,000 miles. its only $8.00 a gallon too. If my company didn't pay for my oil changes I'd prob try a synthetic and push for 8 to 10,000 miles since the damn filter costs 50.00
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Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
Originally Posted by MonatheGrona94
I like the Castrol GTX made specially for diesels. Its what I run through my 6.0 every 4,000 miles. its only $8.00 a gallon too. If my company didn't pay for my oil changes I'd prob try a synthetic and push for 8 to 10,000 miles since the damn filter costs 50.00
Where the heck are you getting the filter? I can get the genuine racor filter for 14.99 at walmart or 21.00 from the dealer
Logistics Pro
Joined: Nov 2002
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From: Mansfield, TX USA
Originally Posted by jimandmandy
Where is GTX Diesel $8? PepBoys charges more for it than any of the other fleet oils on the shelf.
Jim
Jim
The diesel oil used to be called RDX or something like that. Now it is just called GTX like the gasser oil. So when PB puts Castrol GTX oil on sale, it includes the diesel grades.
Elder User
Joined: Aug 2002
Posts: 773
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From: VA/USA
Originally Posted by BaronVonAutomatc
Why would a diesel engine need different oil than a gas engine?
I believe most diesel blends are "15W40" as well (though not exactly sure why on that).
Also my understanding (from what I've learned HERE! Actually, learned A LOT here!! - I THINK?!?) is that while a diesel oil might work well (in certain applications) in a gasoline-fueled vehicle, the opposite is NOT true.
I think that is the simple (mine anyhow) explanation - hope it helps!
Glenn ...
Last edited by TOUGHLover; May 1, 2007 at 11:16 PM.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
Originally Posted by jschira
PepBoys has Castrol on sale all the time <$2/qt. with rebate. I got a bunch at $1.59/qt.
The diesel oil used to be called RDX or something like that. Now it is just called GTX like the gasser oil. So when PB puts Castrol GTX oil on sale, it includes the diesel grades.
The diesel oil used to be called RDX or something like that. Now it is just called GTX like the gasser oil. So when PB puts Castrol GTX oil on sale, it includes the diesel grades.
All of the bottles i have seen all say "Castrol Tection Extra".
Posting Guru
Joined: Jun 1999
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From: Northern California
The by-products produced by a diesel engine are much different than what is produced and formed via combustion in a gasoline engine. Much of the soot and by-products are held in suspension by the oil in diesels, thus the need for building an oil with different additive properties in diesel lubricants. Those suspended by-products are held safely by the oil, and another reason why diesel oils will turn dark much sooner than an oil in a gasoline engine.
Diesels are also subject to extended idle times, longer oil drain intervals, all of which must be accounted for in gasoline and diesel rated oils, and the reason why both oils are not the exact same formulations.
Ed
Diesels are also subject to extended idle times, longer oil drain intervals, all of which must be accounted for in gasoline and diesel rated oils, and the reason why both oils are not the exact same formulations.
Ed