Oil change intervals - Page 2 - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

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post #13 of 47 (permalink) Old 09-19-2019, 08:41 AM
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Cummins for the 6.7 in all other uses of this motor calls for no loner then 1 year, only RAM says 6 months, which is to drive oil change business into their dealerships. Look at how much the charge compared to cost and time especially in a show and you will no why.

I did the 15K/6 months for the first 4 years. Its quick and not very expensive to do yourself. I am now moving more towards 15K/12 months Cummins recommends, as I feel any possible warranty issues for the engine based oiling issues are about 0 now.

I seriously doubt if you change your oil every 15K or 12 months they would be able to deny your warranty, they would have to prove that caused the failure. I seriously doubt they would even ask how often changed your oil. Now if you drive 90K miles and never change your oil their would be enough evidence to probably justify the question.

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post #14 of 47 (permalink) Old 09-19-2019, 08:59 AM
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Originally Posted by Jimmy N. View Post
It's clearly spelled out in the manual.

But just between you and me, I don't change the oil every six months.
There are literally tens of this reading this.

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post #15 of 47 (permalink) Old 09-19-2019, 10:54 AM
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You can always avoid all the speculation, old wives tales, guessing and personal biases.....send an oil sample to Blackstone (or one of the many oil test labs), it will tell you what you need to know......

Sam
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post #16 of 47 (permalink) Old 09-19-2019, 11:34 AM
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I change the oil in mine every 6 to 8 weeks...
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post #17 of 47 (permalink) Old 09-19-2019, 11:36 AM
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Since I'm in tractor maintenance mode this week, I couldn't help but notice the contrast between the oil change schedules for my Ram and the tractor.

Ram: 15,000 miles, six months, or 500 hours.
Tractor: Every 300 hours.

Very unlike the Ram, the tractor should have its first change at 50 hours. Makes perfect sense to me, getting the break-in crap out of there early, and why I do the same with Rams instead of letting 15,000 miles pass.

Also interesting is that after that initial oil change on the tractor, with a 300 hr interval, the filter is only supposed to be changed every 600 hours.
Naturally I change the filter, too, while I'm at it.

So here we have two turbo charged diesel vehicles that cost about the same. Why are the oil change requirements that different?
My guess is that while a tractor may sit for months, when it gets fired up it's not to go to the corner store two blocks away. Instead it gets used and properly warmed up.

The bottom line is that effectively I'm forced to change my oil every six months on the Ram because so many use theirs as a car, and Ram knows it.
Okay, that's not the whole story. As mentioned, most other vehicles don't have this dumb time based interval, but FCA has seen the opportunity to profit from improperly driven vehicles.

Maybe if we start telling people that the brain is an app, they will start using it?

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post #18 of 47 (permalink) Old 09-19-2019, 01:03 PM
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I've got 3500 miles and 3 months on the factory fill. I'm not waiting 3 more months to change it. Just had two Fleetguard LF16035 filters delivered from Amazon.
Going to Sam's club now to get 3 jugs of Rotella.
Piece of mind is priceless. I'm saving the receipts in case I have a warranty claim.
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post #19 of 47 (permalink) Old 09-19-2019, 01:10 PM
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Quote:
Originally Posted by Jimmy N. View Post
Since I'm in tractor maintenance mode this week, I couldn't help but notice the contrast between the oil change schedules for my Ram and the tractor.



Ram: 15,000 miles, six months, or 500 hours.

Tractor: Every 300 hours.



Very unlike the Ram, the tractor should have its first change at 50 hours. Makes perfect sense to me, getting the break-in crap out of there early, and why I do the same with Rams instead of letting 15,000 miles pass.



Also interesting is that after that initial oil change on the tractor, with a 300 hr interval, the filter is only supposed to be changed every 600 hours.

Naturally I change the filter, too, while I'm at it.



So here we have two turbo charged diesel vehicles that cost about the same. Why are the oil change requirements that different?

My guess is that while a tractor may sit for months, when it gets fired up it's not to go to the corner store two blocks away. Instead it gets used and properly warmed up.



The bottom line is that effectively I'm forced to change my oil every six months on the Ram because so many use theirs as a car, and Ram knows it.

Okay, that's not the whole story. As mentioned, most other vehicles don't have this dumb time based interval, but FCA has seen the opportunity to profit from improperly driven vehicles.
Food for thought... Cummins allows up to 80,000 mile oil drain intervals on the ISX engines with 10,000 sample intervals.

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post #20 of 47 (permalink) Old 09-19-2019, 01:22 PM
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Food for thought... Cummins allows up to 80,000 mile oil drain intervals on the ISX engines with 10,000 sample intervals.
And I'm guessing that there's no time limit, either?

Maybe if we start telling people that the brain is an app, they will start using it?

'14 1500 V6, '17 3500 C&C, plus a '19 3500 6.4 in the household.
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post #21 of 47 (permalink) Old 09-19-2019, 01:30 PM
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And I'm guessing that there's no time limit, either?
Actually they still recommend 6 months with the standard schedule. Not sure if that still applies with their extended drain & analysis program

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post #22 of 47 (permalink) Old 09-19-2019, 01:39 PM
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Actually they still recommend 6 months with the standard schedule. Not sure if that still applies with their extended drain & analysis program
In all fairness, six months with a tractor trailer is usually a crap load of miles.

Maybe if we start telling people that the brain is an app, they will start using it?

'14 1500 V6, '17 3500 C&C, plus a '19 3500 6.4 in the household.
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post #23 of 47 (permalink) Old 09-19-2019, 01:59 PM
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In all fairness, six months with a tractor trailer is usually a crap load of miles.
Or a crap load of hours. Either that or your business plan is flawed.

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post #24 of 47 (permalink) Old 09-19-2019, 03:42 PM
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I've been doing 15,000 miles, changing it with Valvoline Extreme, and a fleet gaurd lf16035. 15,000 miles put me at about 5 moth intervals. My Blackstone analysis say it's all working well together.
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