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Old 03-29-2016, 08:21 AM   #1
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All you 5.7L Hemi Owners, Synthetic Oil?

Has anyone with the 5.7L Hemi made the switch to Full synthetic? Did you notice any improvements in temperature? Is synthetic really worth the extra money? Mine is a 2013 with 30,500 on the clock. How about any of you other V8 gasser owners?
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Old 03-29-2016, 11:25 AM   #2
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Has anyone with the 5.7L Hemi made the switch to Full synthetic? Did you notice any improvements in temperature? Is synthetic really worth the extra money? Mine is a 2013 with 30,500 on the clock. How about any of you other V8 gasser owners?

Mobil 1 only for mine! I switch to full syn after the first oil change in all my vehicles, Hemi or not. To me it's worth it. All the mechanics I know say the same thing.


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Old 03-29-2016, 11:32 AM   #3
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Has anyone with the 5.7L Hemi made the switch to Full synthetic? Did you notice any improvements in temperature? Is synthetic really worth the extra money? Mine is a 2013 with 30,500 on the clock. How about any of you other V8 gasser owners?
I made the switch at about 25k miles on my '14 5.7L.

Haven't noticed much difference in temps. Can't really say if it's worth the extra $$$ or not. I do it myself so it's not really that bad buying in bulk.
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Old 03-29-2016, 11:37 AM   #4
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Mobil 1 only for mine! I switch to full syn after the first oil change in all my new vehicles.


John

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2012 Grand Cherokee Overland (Hemi)
Started using about 10 years ago. About a wash as price goes travel a few more miles on oil changes compared to non syn. I also change my own. Later RJD
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Old 03-29-2016, 12:06 PM   #5
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It is absolutely worth it. I am a technician you can definitely tell a difference on the internals of the engine. I did a head gasket replacement on that was severely overheated that had 280k of synthetic use and you could still see the cross hatching in the cylinder walls from the factory assembly. I run Amsoil in my diesel and also in my navigator and all lawn equipment.


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Old 03-29-2016, 12:08 PM   #6
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Well then it looks like I am going full Synthetic!
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Old 03-29-2016, 12:17 PM   #7
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03 hemi here I've used mobil 1 for most of the time for the same reason most have posted,most mechanics I've talked to swear by it. So far so good 150k on it with 6-7k intervals between oil changes.
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Old 03-29-2016, 12:38 PM   #8
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Mobil 1 full synthetic. Can't go wrong!
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Old 03-29-2016, 12:45 PM   #9
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Full Syn.

I have a 2011 1500 5.7 and run full syn from the beginning. I also have a 2004 Harley that was stuck in traffic when new. It came with regular Harley oil. Was a hot day. When I got her home and pulled the oil stick it was black and smelled like charcoal. Switched over to amsoil and never will go back. Things cost too much to scrimp on a few bucks.
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Old 03-29-2016, 12:53 PM   #10
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I've been running Amsoil in my 2000 Tundra, V8 since its second oil change (being as how the first change was free). It has over 205,000 miles on it now; doesn't burn or drip a drop. Change it out once a year whether it needs it or not. Definitely worth it in my opinion.
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