I've got a 2015 RAM 2500 with 45k on it.

The truck is all stock.

I’ve been doing some research and I’m getting a lot of different info on how much you’re actually supposed to put in it.

I think the manual calls for 5 quarts.

I’ve read that some people will fill it until it comes out of the fill hole, just like you normally would.

Then I’ve read a lot of people will add in an extra after putting the fill hole plugin.

What’s right?

What’s the advantage of the extra quart?

Shouldn’t the manufacturers know where they want the fluid level to be?


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