Oil... 

"Shoop" (shoopdawoop993) 10/31/2017 at 21:30 • Filed to: Oil

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So my truck (08 2500hd with 6.0 gas) takes 5w30. I put in quart of that... And 5 quarts of 5w20. Should I change it out? It’s a 3000 mile schedule, and the weather is only going to get colder. Napa premium performance synthetic blend, if it makes a difference.

traitor joe > Shoop 10/31/2017 at 21:39

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Just put a cup of flour in to thicken it up and you’ll be golden

Highlander-Datsuns are Forever > Shoop 10/31/2017 at 21:42

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Now you have 5W22.

His Stigness > Shoop 10/31/2017 at 21:43

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Check the owners manual and see if it allows different types.

Generally if you put one wrong quart in it’s fine, but not the other way around.

You won’t cause unspeakable damage, but I’d change it out unless the manual says 5w20 is fine.

Urambo Tauro > Shoop 10/31/2017 at 21:56

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I’m with His Stigness. Drain it or see if the owner’s manual lists 5w20 as an option.

Beyond that, I wonder if you could get away with adding some of this to thicken it up a little.

gogmorgo - rowing gears in a Grand Cherokee > Shoop 10/31/2017 at 21:56

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I’m less inclined to think that’s okay than some. You can check in your owners manual (or call your dealer probably) but the second number is the warned-up weight of the oil, not the cold weight. 5w20 will be thinner than 5w30. It’s not like where you can use 10 or 15w30 in warmer climates then switch out ton 5w30 when it’s colder.

gmporschenut also a fan of hondas > Shoop 10/31/2017 at 22:02

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jus ttoday put it in or last oil change?

any particular reason why you put the 5w20 in?

nermal > traitor joe 10/31/2017 at 22:30

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An egg would probably work as well.

For Sweden > Shoop 10/31/2017 at 22:37

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Make sure the manual doesn’t explicitly forbid against 5W30. I once had a car with bold text in the manual stating DO NOT USE 10W40 !

Shoop > For Sweden 10/31/2017 at 22:58

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5w30 is what it wants.

Shoop > gmporschenut also a fan of hondas 10/31/2017 at 22:59

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Because I bought the wrong big jug, and didn’t notice till after

Tristan > Shoop 10/31/2017 at 23:19

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Google: 6.0 Chevy 5w20 site:bobistheoilguy.com

Also, GM’s oil life monitor is one of the few things they really did right. Follow it, and you’ll get a lot more distance out of  your oil changes.

gmporschenut also a fan of hondas > Shoop 11/03/2017 at 19:38

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done that before. grab jugs. go home realize one is different.

I’d be cautious running a lower (operating temp) weight oil.