Duramax Diesels Forum Truck of the Week
Old 09-09-2010, 03:17 PM
03DuraMax4x4 03DuraMax4x4 is offline
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Location: Hattiesburg, MS
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Default What oil do you use?

I'm brand new to diesels (I've only had mine for a little over a month) and am wondering what oil everybody is using and the change intervals.

I used Castrol and Mobile1 in my 04 Z71, but now I am considering going with the synthetic AMSOIL 15W-40 Heavy-Duty Diesel & Marine.

As far as intervals go, I've been told to change it once the "OIL LIFE" on the DIC shows 20-30%.

Just wondering what everybody else is using.

03 Chevy Silverado 2500HD LT 4x4 6.6L Duramax, leather, fully loaded, 285/75R16E BFG A/Ts, spray-in bed liner, 154K miles.

Future upgrades: Banks Power Big Hoss Bundle.

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Old 09-09-2010, 03:27 PM
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sparepartsracing sparepartsracing is offline
spareparts offroad&fab

Join Date: Mar 2010
Posts: 741


rotella 15w-40 i change my fuel filter/tranny spin on/oil every 4500-5000 miles
duramax: motor build in process

87' cherokee chief: 4.5" clayton lift, 35s cut up jumpin machine

m52a2: 54"s ,troop carrier bed, air ride seats
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Old 09-09-2010, 03:40 PM
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Mike L. Mike L. is offline
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Location: Disneyland, CA
Posts: 12,616

Citgo 5-40 synthetic.
Shop 714 870 7300
Cell 310 918 9678

Tuned by Idaho Rob.
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Old 09-09-2010, 04:15 PM
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Vrabel Vrabel is online now
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Location: Hewitt, NJ
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Rotella 15-40 every 5k
'01 Silverado 2500HD. Not Quite Stock.
Sheet Metal Workers Local #22
Creatures Of The Night Performance
ProFab Performance
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Old 09-09-2010, 04:40 PM
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sddmax sddmax is online now
<---- Gone Forever...
Join Date: Feb 2010
Location: Garretson, South Dakota
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Mobil delvac 1, 5-40 syn.
'07 Classic cc/sb LBZ

'09 GMC slt cc/sb LMM
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Old 09-09-2010, 04:55 PM
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countrycorey countrycorey is online now
Trust Me I'm an Engineer
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Location: MS
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Originally Posted by Vrabel View Post
Rotella 15-40 every 5k
2007 Chevy Classic CCSB LS 4x4 w/ LBZ & 6 Spd Ally
Graystone Metallic
295/70/17 Nitto Trail Grapplers on Chrome H2s w/ LMM Centers
Custom CamLocker Toolbox
Grizzly Nerf Bars
Pioneer 4100 Head Unit
JL Audio Components
Sportsman Max4 Seat Covers
MPI GT4202/Stock
HSP Coolant Tank
Tinted Windows
PCV Rerouted
EGR Blocker & Fingerstick
Nicktane 1 Micron Filter & Adapter
Banks Hot Side Intercooler Tube
ProFab Y-Bridge and 3" Cold Side Boost Tube
AutoMeter Phantom II Boost and EGT on A-Pillar
Hammerhead Armor Replacement Front Bumper
EFILive from IdahoRob
Fleece All On Mod

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Old 09-09-2010, 04:59 PM
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JoshH JoshH is offline
Daggum farm truck
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Location: Texas!!!
Posts: 11,582


Delo 400 15w-40
06 Silverado 4x4 CC/SB

06 Express 2500 Duramax Van "The Dumpster"

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Old 09-09-2010, 06:11 PM
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A_T_Ver A_T_Ver is offline
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Posts: 403

Originally Posted by Vrabel View Post
Rotella 15-40 every 5k
Originally Posted by countrycorey View Post
2005 LLY-SCIV-5" str8-ATP DSP5
Motor build in progress

Marine Veteran
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Old 09-09-2010, 06:15 PM
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Randy5.0 Randy5.0 is offline
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Posts: 291


Originally Posted by JoshH View Post
Delo 400 15w-40
2007 LBZ ATP, MPI, BIG DIPPER, Steve Ford, AJ Hynick
7.59@90.3 mph 1.63-60' 10/16/09 Eddyville Raceway

"America is all about speed. Hot, nasty, bad ass speed." -Eleanor Roosevelt 1936
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Old 09-09-2010, 07:16 PM
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DAVe3283 DAVe3283 is online now
Heavy & Slow

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Originally Posted by Randy5.0 View Post
Originally Posted by JoshH View Post
Delo 400 15w-40
X3, every 5,000 miles

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Old 09-09-2010, 07:56 PM
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SteveFord SteveFord is offline
What's Next?
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Location: Iowa
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Originally Posted by A_T_Ver View Post
X4. If I let it go that far. I change mine once a month or month and a half at the most. Write off for me so I figure what the hell, I will get it back at the end of the year.
2009 lmm
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Old 09-09-2010, 08:09 PM
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hondarider552 hondarider552 is offline
Getting faster

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Location: Arizona
Posts: 9,597


Petro Canada 15-40 every 3k.

04 SC/SB 1500 2wd that was a V6

15 6.7 2500 Blacked out. 20's/420's, lowered

Tailgate Member #1 I prefer the backdoor
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Old 09-09-2010, 08:20 PM
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Noreaster Noreaster is offline

Join Date: Jun 2007
Location: Cape Cod,MA
Posts: 2,742


Amsoil 15-40 HD diesel & marine
02 GMC 2500HD RC/LB 12.26 @ 109 "No Shuckin Luck"
Ridge Runner Diesel Performance, Big Dipper tranny, Profab Performance, Super Diesel, Creatures of the Night, AirDog, BD
02 GMC 2500HD EC/SB WCFab twins
Bay State Diesels
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Old 09-09-2010, 08:35 PM
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66impala 66impala is offline
Gear head, bus driver
Join Date: Aug 2010
Location: Kalamazoo, Mi
Posts: 48

x5 on the delo 400 every 5000 or 10K really when the truck says too.
2006 Chevy 3500 P/U, D/A, LLY, Cc 4X4. My LLY has the LBZ computer tune stock 360hp, instead of the stock 310hp. PPE hot + 2 w/7 settings, on setting 4. exhaust is a 5" magnaflow turbo back no kitty. ATS Diesel stage 3 turbo 3000, ATS Computer controler for the 06 & new for engine codes, AFE intake stage 2, EGR Blocked, Transgo Jr. 3.73 gears. Next ATS stage 2 trans. Yes this truck is in MAXX TORQUE MAG. in the 08 & 09 issue.
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Old 09-09-2010, 08:38 PM
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x MadMAX DIESEL x MadMAX DIESEL is offline
<<<< No Horsepower

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Location: Lexington, Ky
Posts: 7,007


Usually use rotella, but switched to shaeffers this last change
LBZ Stock Charger

2.5 puller in the Mecca!!

Manual Mafia

Originally Posted by BgBlDodge View Post
Al gore invented driving the turbo.
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