2018 6.7 Cummins oil preferences

jtruelove

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Just bought a 2018 ram 3500 dually with the 6.7. Just wondering what yalls oil preferences are. I live in south Texas and wont be hauling trailers 24/7 either.
 

mtnrider

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BossHogg

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I use Rotella T6. Because I live in a cold climate, Cummins wants a synthetic in the engine. I always find a deal on it just after the first of the year and buy enough for the RAM plus my land maintenance equipment.

Blackstone has a paper out that is a summarization of individual's oil analysis that compares various oil labels of the same type. Interesting read, don't have the link for it since I read it from a link on another forum but should not be hard to find. The bottom line, there is little difference in engine wear between the oil brands.
 

SouthTexan

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In Texas, you get get away with conventional oil. It does not get cold enough to warrant synthetic per Cummins chart, but there is no harm using it if you want to.

Here is a link to a thread where this was already discussed.

2016 cummins... oil change

The reason why Cummins recommends Valvoline is because they have a contract with them for their factory fill oil and other lubricants. Basically, Cummins endorses them because Valvoline reduced the cost of their factory oil and other lubricants used to make their engines. Kind of a you scratch my back and I'll scratch yours deal. Many manufacturers do this to cut costs.
 
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jtruelove

jtruelove

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When do yall recomend the first oil change? I plan on doing my oil changes I didnt have a good experience with the dealership.
 

Chutoyy

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Did a T6 oil change at 1200mi on my 2018... but I do (wasteful?) early oil changes on all my cars.

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lpfm1990

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Shell rotella t6 5w-40 full syn, I change mine around once a year (or 15k max) the 6 month thing I don’t worry about. My oil will have about 10k on it when I dump it a couple months


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lpfm1990

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And doing the oil change is not that bad, head to Geno’s website and order the fleet guard stratopore filter, the filter cap for when you pull it so you don’t spill the filter pulling it out the hole in the fender liner, and to make it easier and less messy for the next. Get the oil pan drain that screws into were the drain plug goes in, it makes it stupidly simple to drain, and if you have a 5 gallon bucket with a pop up pour spout, you can drain it right into the bucket. Let it keep dripping as you go inside and have lunch, come out. Snap it closed and not have any oil anywhere but in the jug!


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WY-Dave

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Just bought a 2018 ram 3500 dually with the 6.7. Just wondering what yalls oil preferences are. I live in south Texas and wont be hauling trailers 24/7 either.

Whatever the manual says
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