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Technical Info: 3rd Generation: DRIVETRAIN Technical discussion of third generation (2003 - 2007) engine and drivetrain questions, solutions and upgrades.
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Old 02-25-2018
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Herb Herb is offline
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Join Date: Apr 2009
Location: Coopersburg, Pa.
Posts: 2,549

When I had my 2002 CTD I never changed my oil. At 3,000 miles I made the switch to AMSOIL and added the Dual Remote Filtration System. I backed it up with oil analysis, and when I traded it in with a little over 70,000 miles on it and 5 years the oil report showed the oil was suitable for continued use. Just changed my filters when needed and topped off.
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AMSOIL Synthetic Lubricants & Filtration

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Old 02-26-2018
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ccmckee ccmckee is offline
Join Date: Mar 2005
Location: Irricana, AB
Posts: 8,124

Gee that sounds familiar
2003 QC HO 6SPD, 305/555, 4WD, TST Controller W/monitor, fuel pressure guage, 100% Amsoil

'96 2500SLT CC LB 2WD, KDP tabbed,100Hp Maxsticks,16* ,3k gsk,afc modded,#8 tst plate,62/70/13 turbo,4" MBRP exhaust,AFE stage III dry filter intake,autometer boost pyro, oil, tran temp,DSS,rebuilt diff & tranny w/billet triple lock TC w/lockup switch,1tn rear cylinders,ride rites on all 4 corners w/on board air,465k km. 330 hp 766 ft/lbs
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Old 02-27-2018
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smokediver smokediver is offline
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Join Date: May 2006
Location: Mississippi
Posts: 3,876

Originally Posted by jetfueljockey View Post
Changed the oil and filter yesterday....too wet to ride but warm enough to work refilled the crankcase with 3 gallons 15W40 Royal Purple and I Fleetguard LF16035...black on start up. Oh well.
JFJ, how often you change the royal purple?

It just baffles me that my 07, 6.7 is still clean and the 09, 6.7 is immediately black.

I'm sure somebody has, but what would oil analysis show on dino oil like Rotella as far as oil change recommendations?

I check it every day I haul before startup along with the radiator.
Had 15K miles on it this time and hadn't added a drop.
But I do start it in the morning and it runs till we're back home unless we stop for supper somewhere.
I also add 1 qt of mobile 1 synthetic, making my own synthetic blend since a gallon of "blend" can be as low as 5%.
390K miles and working hard every day. Must be liking it.
'07, megacab, 2WD, Dually, 6.7, auto,
Deleted, h&s programmer, jasper turbo, ETE tranny, 450k mi !!
'09, quad cab, Laramie, 2WD, Dually, 6.7, auto. 260k mi
Stock, until...
My Other Truck is a Fire Engine!!
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Old 02-28-2018
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jetfueljockey jetfueljockey is offline
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Join Date: Nov 2006
Location: Isham, TN
Posts: 3,172

This oil change interval was 14 months and 14,200 miles. I got started on RP 15W40 when one of the local chain stores had it, nobody was buying it at 30.00 a gallon so they pulled it and was sending it back....I asked about it and they said if I wanted it I could buy it fir 10.00 a gallon....bought 17 gallons. Been on it ever since. Usually once a year or 14-15k.
'06 2500 Brilliant Black Pearl Thunder Road, QC, 4X4, G56 w/ SBDD, Home Brew in the gearboxes Volant CAI, ATS Arc Flow , Airdog 100, AFE 4" cat back, Smarty JR, Warn lock-outs, drilled and slotted rotors, HBS steering stabilizer, Pacbrake airbags, Bilstiens, RP 15W40 , 2 BIG BALLS (shift knobs) from Geno's, 5th wheel slider, step bars. The next mod is........

'74 Trans Am, someday car.......
'10 Wildwood 356 SRV
'15 Mid-life crisis
'98 Oytota Navalon
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