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Old 01-13-2019, 08:47 AM   #31
bsmith0404
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I personally don’t see an issue with your maintenance plan. My concern outside of fuel quality is the DEF. def goes bad, your DEF will last you about 5k miles, but it’s not good for a year. I’d try to run what you have out in the next few months and then only add about a gallon at a time with your limited use.
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Old 01-13-2019, 09:08 AM   #32
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Our diesel truck and 5th wheel have opened several areas of new knowledge for me. I found that most of what I knew about tires only applied to automobile tires and I had a lot to learn about trailer tires.

The diesel truck is similar since there is a big difference between a gas engine and a diesel. My advice is to read the service manual and follow their instructions on oil, oil filters, and fuel filters. Also fluids like transmission and coolant. I have generally used mileage as my guide for the intervals between service, and not time. Many people use fuel additives and talk about them like they were holy water, and I do use them but only when we are between trips and a tank of fuel is going to mostly sit for a month or more. Moisture is deadly to diesel engines and will not mix, unlike most commercial gasolines with alcohol.

Good luck and safe travels.
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Old 01-13-2019, 11:03 AM   #33
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I also have an '18 Duramax, your good to wait until your DIC says it's time to change your oil. You'll also get a message from onstar via email, not every truck is worked the same so not every truck needs to change it's fluids at the same mileage.


On the L5P engine GM recommends not using additives like the previous years engines.


As far a the DEF fluid, I wouldn't worry about going bad in your truck just don't store old DEF in your garage and try to use it after it's been open a year later.

Dealerships have loads of truck that don't sell for a year or more that might never get driven and I'm sure when they do sell them they don't drain the DEF and fill it with new.
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Old 01-13-2019, 12:16 PM   #34
bsmith0404
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They say Def is good for up to two years, I just wouldn’t recommend letting it get old. No reason to fill it if it’s going to last a year. Use smaller quantities and keep it fresh
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Old 01-13-2019, 01:34 PM   #35
larryflew
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I'm with the rest. Good filters as recommended by your guages, not the dealer selling you extra oil changes and put some miles on it when you drive it. If you are in cold country and filling late in the year put the winter grade in early. Few years ago we decided not to leave MN until December. Our October summer fill jelled up b4 we left. NOT CHEAP REPAIR for simple fix.
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Old 01-14-2019, 11:34 AM   #36
KeithBook
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Five years ago, I bought a 2007 F350 Turbodiesel with 203,000 miles on it and in need of lots of loving care. What I learned is that it is common for owners that use the diesels in their business to defer maintenance until the truck does not run. I have spent lots of time at the independent diesel mechanic shop as he rebuilt my truck.


If you take care of it on a regular basis, it will last and be reasonable in maintenance. The diesel trucks can last 300 to 700,000 miles with proper maintenance. With towing, you likely won't come close to that in a gas powered truck. ( I am definitely NOT a mechanic)

Only use the oil filters recommended by the truck manufacturer. I have seen engines needing $10,000 of repairs by a bargain filter.

I will say that having a good diesel mechanic is very important.

My thinking is that we should be using hours on the engine instead of mileage.

Enjoy your truck and trips.
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Old 01-14-2019, 03:17 PM   #37
travelin texans
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Quote:
Originally Posted by KeithBook View Post
Five years ago, I bought a 2007 F350 Turbodiesel with 203,000 miles on it and in need of lots of loving care. What I learned is that it is common for owners that use the diesels in their business to defer maintenance until the truck does not run. I have spent lots of time at the independent diesel mechanic shop as he rebuilt my truck.


If you take care of it on a regular basis, it will last and be reasonable in maintenance. The diesel trucks can last 300 to 700,000 miles with proper maintenance. With towing, you likely won't come close to that in a gas powered truck. ( I am definitely NOT a mechanic)

Only use the oil filters recommended by the truck manufacturer. I have seen engines needing $10,000 of repairs by a bargain filter.

I will say that having a good diesel mechanic is very important.

My thinking is that we should be using hours on the engine instead of mileage.

Enjoy your truck and trips.
Not sure what diesel you had in your '07, if it was the 6.0, that had to have been the biggest POS ever mounted under a hood!!!
My son had an Excursion with that worthless hunk of iron & every time they scheduled a trip out of town they'd make it just out of the city limits before head gaskets (3 or 4 times after the ARP bolt upgrade), turbo, injectors or all the above would give up & strand them. Finally called the bank & said "I can repair it or pay for it but can't do both any longer, so come haul it off, but bring a trailer because it doesn't run, parked in the driveway with the keys in it!".
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Old 01-14-2019, 03:36 PM   #38
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What I understand about fords 6.0 turbodiesel from 2007 is the original factory configuration had lots of problems. The one I got had had the “bullitproof” upgrades put in. Most of the problems i had were not engine related. Most were things needing repair from lack of maintenance including wheel bearings, brakes, worn out interior, air conditioning compressor.
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