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Old 01-08-2018, 06:04 PM   #1  
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2018 questions

I just traded my 2009 3500 for a new 2018 3500.
I notice that the new one has 2 screens ( can't call them gages) one is the fuel filter life and the other is the oil life.

Now the fuel filter I can kind of understand how it is determined by measuring the PSI on each side of the filter and when restriction is at a certain point say that it should be replaced.

But how is oil life determined?

I'm guessing at run hours and starts?
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Old 01-08-2018, 11:04 PM   #2  
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I am not sure how it works but if it's similar to what gm has it's a sensor in the oil pan. GM has had them in vehicles for 10 years or more.
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Old 01-11-2018, 06:08 AM   #3  
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Both the oil and fuel filter life are based of algorithms, starts, run cycles, mileage, hours, idle time, etc.

There are no pressure sensors, heck even your oil pressure is a dummy made up pressure.
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Old 01-14-2018, 07:06 PM   #4  
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I think I'm getting old . it seems that the fuel filter would be simpler with PSI sensor's but who am I to out think a over paid engineer that needs to make things complicated so he/she can keep their job.

As for the oil life thank you at least I know a little about what is happening now.
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Old 04-03-2018, 08:24 PM   #5  
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I think the oil life gauge is total BS, my new 2018 2500 got to 10K miles and still said it was 50% good. The dealer said its find, I found another dealer. Oil is the life blood of engines. My 2009 had 280k miles on it when I traded ran as strong as the day I bought it and used no oil. Longest I ever went with synthetic was 10k before changing . Its best to go with with some old school thinking sometimes IMHO. New engines , $100.+ labor rates oil is a cheap insurance policy. Fuel the same thing
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Old 04-09-2018, 11:54 AM   #6  
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I was wondering about this oil life recommendation from the truck's computer on my 2016.
On my 92, and '07, i have always changed at 3k to 5k miles with Delo 400.

Should I follow the same rules with the 2016? Delo 400 still ok? or is some full synthetic BS "required" now?

I think this "oil life" algorithm would go to 12-15k before hitting 0%.
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