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New 2015 3500 DEF fluid and other misc questions.

Old 12-14-2014, 05:07 PM
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New 2015 3500 DEF fluid and other misc questions.

First ever vehicle I have owned that takes DEF fluid. Like oil brands and fuel qualities, are there any recommended brands of this stuff?

Oil. I have always used Rotella T 5w40 and the owners manual even states using Rotella T. I have been using Royal Purple in my other non-diesel vehicles and really like it. Thinking about using it but only comes in 15w40 and we are in winter here now. Thoughts? Not interested in Schaffers or Amsoil where I have to order it. I do like the 5w40 but I can't find Royal Purple in 5w40 for diesel. Am I missing it somewhere?
Also I have always dumped the factory oil between 500-1000 miles. Thoughts on this for this 6.7?

Seat covers for heated/ventilation seats. I did a search but the links don't cover the consol I have. Anywhere I can see actual pics?
As well, any steering wheel covers that are compatible with heated steering?

Thank you
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Old 12-16-2014, 07:31 PM
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I have 11,000 miles on my 14 according to the computer it's still good
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Old 12-16-2016, 10:09 AM
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As far as DEF, the brand may not be as critical as the age and spec to be sure it meets Ram manual requirements (as should the oil). Blue DEF is a common one available almost anywhere in 2.5 gal containers. Determining the age is a bit cryptic. As an example, there will be a number on the container like: PB171502354. The 17 means it was produced in 2016 (17-1=16). The 150 means there is 150 days left until it is 1 year old, the higher this number the newer it is. DEF degrades with time and temperature from about 6 months (hot) to 2 years or so (cool). Most sources seem to say it should be used within a year under most conditions.
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