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Old 08-27-2014, 05:07 PM
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Oops! Put in 5w20 vs 5/10w30

Totally went full retarded and put in 5/20 before I start it I cAlled 3 jeep dealerships and they say I will be fine as the new motors run 20w instead of the 30 we used to. They wrong or right? uploadfromtaptalk1409177242023.jpg
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Old 08-27-2014, 05:26 PM
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Re: Oops! Put in 5w20 vs 5/10w30

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Originally Posted by hoffmanestates View Post
Totally went full retarded and put in 5/20 before I start it I cAlled 3 jeep dealerships and they say I will be fine as the new motors run 20w instead of the 30 we used to. They wrong or right? Attachment 45111
Three different jeep service folks told you that you'd be fine...

You don't mention what engine and how many miles on it, but I wouldn't even expect a 4.0 with 150K miles or so to notice or have increased consumption to speak of.

You could, if you want to feel better, pick up some 10-40 and use it to top off...
Wouldn't expect it to make much difference...
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Old 08-27-2014, 05:35 PM
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Re: Oops! Put in 5w20 vs 5/10w30

4.7 rebuilt last year. So 0 consumption. I always run 10w30 summer and 5w30 or 0w in winter.
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Old 08-27-2014, 05:43 PM
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Re: Oops! Put in 5w20 vs 5/10w30

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Originally Posted by hoffmanestates View Post
4.7 rebuilt last year. So 0 consumption. I always run 10w30 summer and 5w30 or 0w in winter.
You can get a synth or synth blend that will cover 5w-40 or even 5w-50, but you put in a good brand of regular oil, so I honestly wouldn't sweat it.

A few glops of STP Oil Treatment will extend the upper range anyway... one Baja racer ran the Baja with pure STP. It will give you piece of mind, but you don't really need it.

Or, you could just change the oil a bit sooner...
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Old 08-27-2014, 05:45 PM
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Re: Oops! Put in 5w20 vs 5/10w30

So 20 or 30 dont matter shit?
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Old 08-27-2014, 05:49 PM
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Re: Oops! Put in 5w20 vs 5/10w30

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So 20 or 30 dont matter shit?
The 20 weight will be a bit thinner at high temperature is all.

If that bothers you, just add a small bit of STP, or change it early.

Like the dealers told you, it shouldn't bother your engine.
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Old 08-28-2014, 06:42 AM
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Re: Oops! Put in 5w20 vs 5/10w30

5W30 is what normally is used in the 4.7. Using 5W20 will give a lower oil pressure at operating temperature.
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Old 08-28-2014, 06:46 AM
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Re: Oops! Put in 5w20 vs 5/10w30

I should be good for about a 1000 or 2000 then do oil Change
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Old 08-28-2014, 09:20 AM
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Re: Oops! Put in 5w20 vs 5/10w30

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Originally Posted by hoffmanestates View Post
I should be good for about a 1000 or 2000 then do oil Change
Yes, I wouldnt sweet it, just keep an eye on the level and perhaps dont beat on the engine. I assume you dont tow anything?

If you have to add any oil during the interval use a 40wt.

How did you dump 20wt in, grab the wrong container off your oil stash or grab the wrong one at Wally world LOL

BTW, you said you rebuilt the 4.7, did you do it or did you farm it out, how about some details and how many miles did you get out of it originally.

Kudos to you for keeeping your jeep alive!
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Old 08-28-2014, 10:26 AM
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Re: Oops! Put in 5w20 vs 5/10w30

Did my self. I bought it with cyl7/8 coolant leaking into cylinder. Paid $500 for the truck.
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Old 08-28-2014, 10:27 AM
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Re: Oops! Put in 5w20 vs 5/10w30

Look up my threads
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Old 08-28-2014, 11:20 AM
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Re: Oops! Put in 5w20 vs 5/10w30

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Did my self. I bought it with cyl7/8 coolant leaking into cylinder. Paid $500 for the truck.
Sweet deal. Congrats.
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