Can I use 10-30 oil in my 5.9

[Jonyboy]

Some one gave me 10-30 royal purple oil for my cummins could I use it or not because I use thicker oil

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[usarmy3224]

I wouldn't recommend it.

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[IGOTACUMMINS]

Nope! Not good.

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[Rockwerx]

I would use it in a gasser but for your diesel you need an oil that will not thin out under heat like a 10-40 or 10-50 oil.

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[F350Cummins]

If you are up in canada you can use it in the coldest winter months, besides that, I wouldn't

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