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Old 06-05-2014, 10:14 AM   #1
Blood Trail
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Default 5.7 Hemi oil question

I run Mobile 1 Extended full synthetic 10w30 in my 2012 5.7 Hemi. The manual calls for 5w20. But I figured since its hot here, I'd go a little heavier. Is this gonna ruin something? What say ye? Is this safe?
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Old 06-05-2014, 10:34 AM   #2
eradicator
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I have a 2003 and have used 10w30 exclusively. No problems. 195,000 miles
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Old 06-05-2014, 10:48 AM   #3
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I put 198,000 on my 2003 5.7 running 10w-30 without issues. Traded it in Dec and got a new dodge with the 5.7. Will do the same thing.
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Old 06-05-2014, 06:50 PM   #4
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Dual weight oil is a little different. Your probably thinking run thicker oil cause its hotter and it will be thinner. Not true on the dual weight. It gets thicker as it gets hot.

Answer this, do you run 87 or 89 octane?
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Old 06-05-2014, 07:04 PM   #5
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I know this don't help, but I got a 2014 5.7 Hemi. I only got 2,800 miles on it. When should I change the oil?
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Old 06-05-2014, 07:13 PM   #6
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Quote:
Originally Posted by Brooks View Post
Dual weight oil is a little different. Your probably thinking run thicker oil cause its hotter and it will be thinner. Not true on the dual weight. It gets thicker as it gets hot.

Answer this, do you run 87 or 89 octane?

Mostly 87
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Old 06-05-2014, 07:35 PM   #7
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Some use thinner because of the clearance of the internal parts
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Old 06-05-2014, 07:37 PM   #8
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Originally Posted by bowhunter45 View Post
I know this don't help, but I got a 2014 5.7 Hemi. I only got 2,800 miles on it. When should I change the oil?
lol in 200 miles
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Old 06-05-2014, 07:52 PM   #9
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Quote:
Originally Posted by Blood Trail View Post
Mostly 87
Just wondering some people get hung up on the 87-89 octane deal. I have been told that manufacturers are running the 5w20 to help with mileage. You probably won't see a difference but its one way they can improve their EPA numbers.
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Old 06-05-2014, 09:03 PM   #10
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Originally Posted by TxSuperDad View Post
lol in 200 miles
I have a 2014 dodge as well, the digital gage tells me when to change the oil. At 3,500 miles so far I still have 75% oil life. I'll change it once it gets down to the twenties
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Old 06-05-2014, 09:07 PM   #11
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lol in 200 miles

he's got longer than that, look at the manual. . I ran 7500 miles on my first oil change and took it to the dealer. They asked if it was the first and I said yes. They bout fell out and said it's gotta be done at 3k. I said check the manual fellas it says 8k. I do mine now a days at ~4k but I'm on about 6500 right now and need to get in. Bad thing is the oil still looks fresh at 4k so I don't usually worry if I'm a little behind on it.

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Old 06-05-2014, 10:14 PM   #12
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can't go by looks of the oil
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Old 06-05-2014, 10:17 PM   #13
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I have the 2014 also as a work truck. I have about 5500 miles now I have sent of a couple samples. Should have some data soon.
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Old 06-05-2014, 11:40 PM   #14
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I have the 2014 also as a work truck. I have about 5500 miles now I have sent of a couple samples. Should have some data soon.
Can ya elaborate on sending samples in? Where, why, cost, how? I've seen this mentioned a couple times but I know nothing about it. Thanks
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Old 06-06-2014, 12:00 AM   #15
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Can ya elaborate on sending samples in? Where, why, cost, how? I've seen this mentioned a couple times but I know nothing about it. Thanks
If u wanna do it all ur self. That's the way to go. Keep records and stay on top of it.
Other than that just change on regular basis.
We suggest at my shop 3 to 5 on standard oil, 7 to 10 on full synthetic. On gasoline engines.
5 to 7 and 15 to 25 respectively on diesel.

My amsoil customers avg about out at about 17k for diesels
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Old 06-06-2014, 12:17 AM   #16
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Quote:
Originally Posted by Jeremy7306 View Post
Can ya elaborate on sending samples in? Where, why, cost, how? I've seen this mentioned a couple times but I know nothing about it. Thanks
http://www.blackstone-labs.com

Most folks change their oil at 3-5k because that's what's deemed safe under most circumstances. Analysis lets you pass that mark and see just how far your oil can go in your particular vehicle/driving situation.
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Old 06-06-2014, 01:00 AM   #17
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Oil analyzers Houston texas
http://www.amsoil.com/shop/by-produc...?code=KIT02-EA
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Old 06-06-2014, 04:49 AM   #18
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I never run anything other than the specified weight by manufacturer in my trucks. I love my Hemi's and do run full synthetic in them, but always the specified weight.
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Old 06-06-2014, 07:20 AM   #19
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Answer this, do you run 87 or 89 octane?
I run 87 Octane.
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Old 06-06-2014, 07:49 AM   #20
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Quote:
Originally Posted by billfromtx View Post
I run 87 Octane.
Dodge recommends 89 octane and 5w20. But we all know the Hemi will run on 87 and 10w30.

If you have an 06 or later with MDS it is critical to run 5w20. The oil is used to shut down the cylinders and will not work properly with the thicker oil.

Last edited by Brooks; 06-06-2014 at 07:52 AM.
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Old 06-06-2014, 08:41 AM   #21
billfromtx
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Originally Posted by TxSuperDad View Post
lol in 200 miles
I did mine every 5000 miles ...I think the owners manual says 5000 miles as well.
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Old 06-06-2014, 11:02 AM   #22
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Quote:
Originally Posted by bowhunter45 View Post
I know this don't help, but I got a 2014 5.7 Hemi. I only got 2,800 miles on it. When should I change the oil?
Does the manual say anything about engine break-in? For the first oil change, I would tend more toward early than late.
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Old 06-06-2014, 11:21 AM   #23
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Modern engines are designed to run on thinner oils due to the close tolerances they are put together with and the materials they are made from. Heavier thicker oils will have more parasitic drag on the crankshaft and rods and will reduce the available horsepower off of the flywheel even if it is a dry sump engine. Best results will be from what the mfgr recommends.
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Old 06-06-2014, 11:26 AM   #24
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Originally Posted by 30-30 View Post
Does the manual say anything about engine break-in? For the first oil change, I would tend more toward early than late.
That's actually backwards Jim, wanna actually break it in and not baby it first 5-8k miles. That's my families theory on it at least. If running synthetic from the get go, we will change at 10-13k for the first oil change.
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Old 06-06-2014, 11:28 AM   #25
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Oh, and hi Leon


Looooooveeeeee youuuuuuu


Now quit driving a dodge!
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Old 06-06-2014, 11:46 AM   #26
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Can ya elaborate on sending samples in? Where, why, cost, how? I've seen this mentioned a couple times but I know nothing about it. Thanks
Absolusty not needed. All you need to do is follow the maintince guidelines. Change oil at <10,000 miles. Use a quality conventional 5w20 oil and your good to go. I am just sending samples to see what the trend is doing on the new pick-up.
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Old 06-06-2014, 12:02 PM   #27
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I just got a work edit 2014 hemi 5.7 2500. What are y'all averaging on mpg?
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Old 04-11-2019, 12:04 PM   #28
eltacs
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I have 84,000 on my 2013 Ram 2500 4x4

It has cold air intake
Aftermarket exhaust
Bully Dog programmer on performance
Pedal Commander on Sport Mode +4
Run only 93 Octaine

Over long periods of daily driving.
Mixed use...
60miles a day on HWY and driving all over town stop light to stop ligh -

I average 14.0 IF my hwy speed is set at 76...
I average 15.O - 15.6 IF my hwy speed is set at 70
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Old 04-11-2019, 12:13 PM   #29
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Here’s an example on my ram


Sent from my iPhone using Tapatalk
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Old 04-11-2019, 12:34 PM   #30
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Quote:
Originally Posted by Blood Trail View Post
I run Mobile 1 Extended full synthetic 10w30 in my 2012 5.7 Hemi. The manual calls for 5w20. But I figured since its hot here, I'd go a little heavier. Is this gonna ruin something? What say ye? Is this safe?
I'd run what the manual says......not what a bunch of hillbilly bowhunters recommend!

Stick with Mobil 1......best oil ever produced.

Last edited by Traildust; 04-11-2019 at 12:39 PM.
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Old 04-11-2019, 02:52 PM   #31
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It's a thread over 4 years old, he has already had to replace the engine in a more recent thread.
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Old 04-11-2019, 03:01 PM   #32
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Originally Posted by Lungbustr View Post
It's a thread over 4 years old, he has already had to replace the engine in a more recent thread.

I didnt even pay attention to the dates. I was wondering how he only had 2800 miles on a 14. LOL
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Old 04-11-2019, 03:33 PM   #33
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Quote:
Originally Posted by Lungbustr View Post
It's a thread over 4 years old, he has already had to replace the engine in a more recent thread.
Well, hopefully he learned his lesson about oil!
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Old 04-11-2019, 05:20 PM   #34
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Well, hopefully he learned his lesson about Dodge!
Fixed it for you!! Actually if I remember correctly, I think it was more a lesson of these systems that shut down certain cylinders for fuel mileage.

I believe there are plenty of manufacturers that have had reliability/longevity issues with this stuff.
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Old 04-13-2019, 10:46 PM   #35
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Yeah, I switched back to the proper oil after I posted this 5 years ago! Lol

And the MDS failure had nothing to with the oil.


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