Chrysler 287 - 5w30 w/ High Miles?

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I am now at the point of where my Dodge Ram 1500 with 287 V-8 is over 200,000 miles.
and currently use either Smitty's, Pennzoil, or Valvoline High Mileage oils, when I can.

My question: If the miles are so high, is there any issue with using 5w30 or a mix with 10w30? (versus the 5w20 spec)

I have lots of 5w30 and 10w30 stashed, and need to use some of it up. I assume it's ok for this engine with so many miles and being summer? (Avg. temps here are from 25 Winter to 105 Summer)


GL
 
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My 1996 5.9 doesn't like 5k m1 ep check my posts for uoa, I will send a sample next week,at 5k with pup, im about to put a bypass on it
 
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Woops. Deleted my previous response because I thought I had replied to another post.

Anyways, what works for me is to use either one. My current car also tells me to put either 5w30 or 10w30. Don't think it's gonna hurt anything.
 
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