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Old 12-31-2016, 05:43 PM   #57
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Originally Posted by diandtom View Post
I use Rotella also 15-40W and got 77K miles on my 06 Chevy. I change it every 5K miles.
The same here except GMC and 171,000 miles.

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Old 02-03-2017, 12:56 PM   #58
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2006 2500 LBZ, Mobil 1 synthetic diesel oil 15w40, change when DIC gets to around 10%. 152,000 Mi.

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Old 02-03-2017, 12:58 PM   #59
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2003 Chevy crew cab 4x2. 170,000 miles. Shell Rotella. I change it when the truck tells me to.
2005 Safari Gazelle 40PBT
HWH Active Air
AquaHot AHE-100-02S
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Old 02-03-2017, 02:58 PM   #60
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Originally Posted by Sixxgunscott View Post
I have a 2006 Chevy 2500HD with the DuraMax and Allison. It has 155,000 miles. It has the BANKS Airbox, and Monster Exhaust, I was using an Edge Products EEC1000 Chip - set at ECONOMY, but I removed it and returned the system to stock. The reason for removal is that this unit is not CARB approved, and I couldn't get it smogged to comply with CA law. I am now experiencing excessive soot buildup at the tailpipe and degraded fuel mileage - average about 5MPG less than before. I have always used Rotella T6 Synthetic 5-40W which meets all of GM's requirements. I am wondering if I should continue the Synthetic or go back to Dino 15-40 oil. I have no codes on the DIC.

I have the whole banks kit, intake, exhaust and IQ with tuner and brake, could not be happier.

Use 15w40 whatever, usually Delo or Delvac at 5k. And have an 07 LBZ with 80k almost all towing or hauling. Awesome truck.
2017 WGO Fuse
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Old 04-22-2017, 10:44 AM   #61
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I prefer Shell 15w40 but good to see the other suggestions

Carl | Butte, MT
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Old 05-17-2017, 02:42 AM   #62
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Chevron Delo 15W-40 in my 06 silverado LBZ. 139K miles. oil and filter changed every 5k miles. have owned it since new.

It's what will go into our new to us kodiak moho and its onan generator as well.
John & Gina
2005 Winnebago Vectra 40AD Cummins ISL
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Old 05-25-2017, 04:37 PM   #63
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Valvoline premium blue 15-40, mobile 1 filter. 162k. Every 5k or twice a year.
2008 GMC Duramax 3500HD CC,LB,DRW With some hidin power mods 2007 Mobile Suites 36 SB3
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Old 06-04-2017, 08:32 AM   #64
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Shell rotella t. Is my go-to oil. Been running light ad's heavy duty diesels for many years...have had no oil related issues.
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Old 06-04-2017, 09:06 AM   #65
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I just bought 3 gallons of rotella synthetic for the upcoming oil change.
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Old 06-19-2017, 04:24 PM   #66
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Originally Posted by Michaelnstac View Post
Hat oil do you use in your Duramax, how many miles are on it and what year is it?

2007 (1/2). 6.6 with 298,000 miles. Used 15w40 Rotella most of the truck's life. 15,000 miles ago switched to syn Rotella. I change the oil around 8000 miles.
Chevy 2500HD 6.6 2007, Bay Hill 320RS 2015
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Old 06-19-2017, 06:09 PM   #67
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The engine in this picture will soon get another fill of Rotella 5/40 synthetic.

chevman guess no picture
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Old 10-25-2017, 07:54 PM   #68
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06 LBZ Duramax with 310,000 miles of mostly heavy towing, change oil at 5,000 miles when DTC shows %50, fuel filter at 10,000 miles when DTC shows %30, Rotella T6 5W40 synthetic, also used on motorcycles
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Old 10-25-2017, 08:50 PM   #69
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Originally Posted by ksmith View Post
2007 silverado 2500hd 116,000 miles. Previous owner used Mobil 1 Turbo Diesel 5w20
I continue to use it and change every 10,000 miles or earlier. Get 16.9 mpg no load.
Try using Lucas fuel additive. I get 18/19 city 20/22 highway 05 lly duramax Allison crew cab long bed Lt Silverado 2005. I get10.5 to 11.8 towing a 40 foot Landmark Rushmore fifth wheel
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Old 10-31-2017, 07:37 PM   #70
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Rotella. The best

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