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Newbie to Dmax need some fast advice

Kenny, I would not worry I ran 7K on Mobil Delvac 1300 15W/40. Blackstone returned my UOA and said it had plenty of life left.
 
Talked to the guy today. He told me "Duramaxes can go 10k miles on an oil change"
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I dont know if I would trust anyone who says that. It dosent matter one bit what kind of engine it is, any synthetic is better for the engine in the long run and you can run at extended intervals. Saying that "Duramaxes can run at 10k mile oil change intervals" is purely ignorant. Its the fluid you put in it, not the friggen type of motor.

And, for the record, if you go strickly by the DIC (dashboard), you'll be at 12-15k before your oil life actually hits ZERO % life remaining, just like ALL GM vehicles. In fact, thats what they recommend. 3 months or 3000 miles is a busted myth and its pure waste of perfectly good fluid. The oils today are not like the oils of 10 or 20 years ago. Times have changed.

I run Valvoline Premium Blue Extreme synthetic, solely because its local and convenient and I know the shop owner. Last change I went 6k miles. I went 6500 before that and I just turned 40k yesterday.
 
Acesneights1 said:
Talked to the guy today. He told me "Duramaxes can go 10k miles on an oil change". That's not an encouraging sign is it ? I don't let my big trucks go that long.
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I understand your point as I am anal about mine at 3000 even with the Rotella Synthetic. I realize I may be wasting $$ but she is older and I want her to last. I am considering Amzoil for the next change as I can get it locally for $31.xx per gallon and if I can let it run for at least 10k with a filter or two, it will be cheaper on me. I just want to be sure.
Unit453 said:
I dont know if I would trust anyone who says that. It dosent matter one bit what kind of engine it is, any synthetic is better for the engine in the long run and you can run at extended intervals. Saying that "Duramaxes can run at 10k mile oil change intervals" is purely ignorant. Its the fluid you put in it, not the friggen type of motor.

And, for the record, if you go strickly by the DIC (dashboard), you'll be at 12-15k before your oil life actually hits ZERO % life remaining, just like ALL GM vehicles. In fact, thats what they recommend. 3 months or 3000 miles is a busted myth and its pure waste of perfectly good fluid. The oils today are not like the oils of 10 or 20 years ago. Times have changed.
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Agreed
 
Unit453 said:
I dont know if I would trust anyone who says that. It dosent matter one bit what kind of engine it is, any synthetic is better for the engine in the long run and you can run at extended intervals. Saying that "Duramaxes can run at 10k mile oil change intervals" is purely ignorant. Its the fluid you put in it, not the friggen type of motor.

.
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Yeah that was kinda my feeling too.
 
Hey what do you guys think of a 2002 GMC 4x4 Dmax with 200K on it. I can get it really cheap possibly. Is 200K near death or does it have another 40-50k left ?
 
Acesneights1 said:
Hey what do you guys think of a 2002 GMC 4x4 Dmax with 200K on it. I can get it really cheap possibly. Is 200K near death or does it have another 40-50k left ?
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That's a tough call unless you know how it's been used for that length of time. One good indicator is # of hours divided into the miles. If the ave MPH is near 40 it would indicate primarily highway which is alot easier on it. For example, I've got an ave speed of 42.5 MPH and drive 90% highway (93.5k/2200 from my sig).
I always felt the Duramax is a 300k motor if well cared for but that's just an opinion. It could nickel and dime ya (read 100 and 1000) too.
If the price is really good and you can DIY, it might be a good deal.
 
I would have to find the original in service date...if it was after May of 2002 and the truck hasn't broken 200k I would run the balance rates on the injectors and if they are off and you still have warranty (7yrs. or 200k from in service date) only then I would consider it... don't wanna pay $4500 and then another $3000 for injectors 3-6 months later...

run the vin and see if they have been replaced recently...
 
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