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Old 06-26-2016, 04:14 PM
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Diesel Oil Change Frequency?

Just bought a 2016 GC with Eco Diesel. I am new to diesels. Plan on getting a travel trailer soon so the diesel.

My question has to do with the approximately 10K oil change frequency. With gas engines I have recently had or still have (normally aspirated and turbo) I use a 5K frequency with synthetic oil. Is there a good reason to modify the approx 10K frequency with short change period given that it is a new engine and then a shortened frequency for regular driving (more than 30 miles a trip)?

Tried to search for this topic but no luck

Thanks for any help here

Peter

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Old 06-26-2016, 04:47 PM
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Quote:
Originally Posted by pgevanthor View Post
Just bought a 2016 GC with Eco Diesel. I am new to diesels. Plan on getting a travel trailer soon so the diesel.

My question has to do with the approximately 10K oil change frequency. With gas engines I have recently had or still have (normally aspirated and turbo) I use a 5K frequency with synthetic oil. Is there a good reason to modify the approx 10K frequency with short change period given that it is a new engine and then a shortened frequency for regular driving (more than 30 miles a trip)?

Tried to search for this topic but no luck

Thanks for any help here

Peter
There is zero benefit to using 5k mile intervals vice the recommended 10k mile intervals that the manufacturer advises and your oil life meter is set to in your EVIC. Of the members of this forum that have had their oil analyzed at the 10k mile mark, almost every sample has been tested and shown to go another 2 or 3 thousand miles.

While it's your vehicle, the only thing you'd be doing by changing at 5k miles is wasting $100-$200.
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Old 06-26-2016, 06:50 PM
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Re: Diesel Oil Change Frequency?

I have been one that does oil analysis and posted it. I concur the TBN is still excellent at 10K mile intervals and the rest of the metals analysis right on track with good engine health...
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Old 06-26-2016, 06:53 PM
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Re: Diesel Oil Change Frequency?

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Originally Posted by fun2drive View Post
I have been one that does oil analysis and posted it. I concur the TBN is still excellent at 10K mile intervals and the rest of the metals analysis right on track with good engine health...
I agree. Had my JGC diesel Blackstone analysis done at an 8500 mile change and it came out just fine and, as you said, good for more.
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Old 06-27-2016, 02:06 AM
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Re: Diesel Oil Change Frequency?

Thank you all for the replies
Diesel maintenance is so different than for a gas engine.

What about the early first oil change as done by some (me for ex) on a gas engine? What do people think about such a thing for this diesel engine?
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Old 06-27-2016, 09:42 AM
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Re: Diesel Oil Change Frequency?

Your oil life % may go down quicker towing a TT because of the load and towing conditions. Just depends on how many miles you tow. Oil life is based on a bunch of different parameters.

I am towing a 23 ft. TT and will be going on a 4000 mile journey the 1st week of Aug. I will only have about 6000 miles on the GC before I leave.

I plan on changing the oil before I leave for piece of mind. A lot of heat and towing miles ahead made the decision for me.

Now I have about 5100 miles and the oil life monitor sits at 51%. Most likely I would need a oil change somewhere in my trip.

Prefer to pay the early expense and get it done before I leave and not have to do it on the road towing the trailer.
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Old 06-29-2016, 07:30 PM
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Re: Diesel Oil Change Frequency?

Quote:
Originally Posted by pgevanthor View Post
What about the early first oil change as done by some (me for ex) on a gas engine? What do people think about such a thing for this diesel engine?
You're referring to the break in oil change that many manufacturers used to recommend, usually done between 1000-2000 miles to dump out the oil that is contaminated with metal particles left over from the manufacturing process. While this isn't recommended anymore, I think the reason isn't because it isn't needed, because let's be honest, engine manufacturing hasn't changed. What has changed is every automaker trying to reduce their cost of ownership. You mean I have to come back in only 1200 miles for a service that costs $200! That doesn't sit well with most people these days. Arguments against the break in change will note that a special "break in" oil was added, which usually means a thicker additive to help with lubrication. Actual data from automakers on this is hard to track down.
The bottom line is it certainly won't hurt if you do a break in change, nothing but you wallet anyway. (I'd note that if you aren't going to do this yourself then you're adding another opportunity for a dopey tech to screw something up). The 3.0 oil changes aren't cheap, even DIY.
You're only helping the very long term longevity of the engine though; will it last to 200k doing 10k interval changes, most likely. Will it last to 250k because you didn't do a break in change....who knows.
I change mine at 7.5k because I tow and didn't do a break in change. My blackstone report does show the oil is at good condition at that point. Good luck.
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Old 06-30-2016, 03:30 PM
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Re: Diesel Oil Change Frequency?

Engine technology has changed a lot. Tighter tolerances fuel injection and DME controlling the engine has changed engine life expectancy from 100k to most likely well north of 300k miles. We have forum members that are well past 100k miles and nothing to report but Cat replacement and oil and fuel filter changes. My BMW M3 had 287k miles when I sold it doing only recommended changes. My Super Duty 189k miles when sold to a family member and nothing but fuel filter and oil changes.
When was the last time you saw a POS smoking coming down the road?
Technology has changed on engines a lit.
Mineral oil is no longer used to "break in" rings. They do this in house and the engines are ready to go.
Changing oil the first time I did that at 7800 miles and Blackstone gave a great report. Changing at 10K miles Blackstone was excellent TBN was
very high meaning a lot of life left for this oil...


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Old 07-01-2016, 09:16 AM
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Re: Diesel Oil Change Frequency?

I would look at your states biodiesel requirements (MN mandated B10 from April to October). The manual suggests 8k oil changes when using bio blends over 5%... Not sure what problems, if any, will happen, but something to keep in mind as states push higher blends to us.


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Old 07-01-2016, 02:53 PM
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Re: Diesel Oil Change Frequency?

Quote:
Originally Posted by fun2drive View Post
Engine technology has changed a lot. Tighter tolerances fuel injection and
When was the last time you saw a POS smoking coming down the road?
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You obviously don't live in Taos, NM!
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