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Old 12-15-2006, 02:11 AM   #1 (permalink)
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Oil Change on new 2006 2500HD w/Duramax

I will be crossing the 1,000 mile mark on my new 2006 Cheverolet Silverado 2500HD pickup soon. When should I do the first oil change? I intend to use Rotella 15W-40. Also, when should I change the oil filter on the Allison transmission the first time? Thank you!! Dabney
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Old 12-15-2006, 06:15 AM   #2 (permalink)
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I did mine @ 1k,3k,6k,9k,and will do tonight @ 12k I also run rotella, not much in cost but piece of mind, most say i can go longer but, I've put a lot of miles on past trucks and cars and with the 3k change they go a lot farther than most. I also changed the trans filter @ 6k
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Old 12-15-2006, 07:03 AM   #3 (permalink)
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I changes all my fluids around the 1000 mile mark, and now I folow the recommedations from GM (~every 7500 mi for oil, 15k for fuel filter etc)
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Old 12-15-2006, 08:05 AM   #4 (permalink)
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I'd do the oil change (w/filter) between now & 3k. Change your Allison spin on at the first oil change. For a good guideline see the sticky at the top of the Maintenance section. It'll steer you in the right direction.
Old 12-15-2006, 12:42 PM   #5 (permalink)
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I had mine changed at 2500 and will do again at 5K. Then most likely every 7500 after that..

Also, moving this to the maint. section...
Old 12-18-2006, 08:37 PM   #6 (permalink)
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For quicker and easier oil changes...

You may consider a Fumoto oil valve. I purchased mine from gmdieseltech - Eric Merchant
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Old 12-18-2006, 09:15 PM   #7 (permalink)
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changing your oil every 3k on a diesel truck or even a gas truck these days is a waste of $$$. these engines are designed to run on longer oil changes especially when you use synthetic oil. longer oil change intervuls will not harm your engine. like you guys said its mainly a piece of mind deal. but that gets spendy after a while
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Old 12-19-2006, 09:33 AM   #8 (permalink)
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I have settled into ~5k intervals for 1. Peace of mind and 2. It starts to drop about 1/4-1/2 quart at 5k.
At less than $30 with a filter doing it myself in 15 minutes is cheap insurance.
Old 12-19-2006, 09:42 AM   #9 (permalink)
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Originally Posted by saratoga;1475543;
I have settled into ~5k intervals for 1. Peace of mind and 2. It starts to drop about 1/4-1/2 quart at 5k.
At less than $30 with a filter doing it myself in 15 minutes is cheap insurance.
Same here. I change the fuel filter at every 10k, and the allison spin on every 15k.
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Old 12-27-2006, 12:08 AM   #10 (permalink)
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I change mine every 7-8k miles or when the oil light turns on(which ever is first).. Recently pulled a sample at 8k and sent it in to Blackstone labs for analysis. They told me to go to 8,500 miles and check back before changing it out since the oil still had a lot of life left in it.. I've ran Shell Rotella T 15w40 in the truck since new, and it uses no oil between changes. I'll continue changing it out every 8k miles, and send in another sample in another 20k miles.
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