Royal Purple 75w140 or Mobile 1? - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

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post #1 of 16 (permalink) Old 02-13-2013, 10:22 PM Thread Starter
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Royal Purple 75w140 or Mobile 1?

Its time for differential oil refreshment on my Jeep limited 5.7 4wd 2006.

I have seen many discussions about the right oil, and brought me to this point. Royal Purple 75w140 or Mobile 1?

Please share some info if you used Royal purple 75w140 in the front or back diff.. on a 5.7 hemi quadra drive 2.
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post #2 of 16 (permalink) Old 02-13-2013, 10:40 PM
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I think the general consensus for the diffs. is to stick with OEM. Royal purple the engine oil or mobile one has great reviews too but I had mine done, stuck with stock and haven't had a problem with pretty well only that area of my jeep.


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post #3 of 16 (permalink) Old 02-13-2013, 11:13 PM Thread Starter
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Quote:
Originally Posted by rjhj View Post
I think the general consensus for the diffs. is to stick with OEM. Royal purple the engine oil or mobile one has great reviews too but I had mine done, stuck with stock and haven't had a problem with pretty well only that area of my jeep.
OEM: The thing is: I have never seen a oil rig or refinery with a Mopar logo on it, that's why I ask if any has used Royal purple, because the visco levels between royal and mobile 75-140 are close. I'm more curious for the long run and cold weather influence.

Last edited by marco2011; 02-13-2013 at 11:15 PM.
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post #4 of 16 (permalink) Old 02-14-2013, 12:00 AM
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Quote:
Originally Posted by marco2011 View Post
Its time for differential oil refreshment on my Jeep limited 5.7 4wd 2006.

I have seen many discussions about the right oil, and brought me to this point. Royal Purple 75w140 or Mobile 1?

Please share some info if you used Royal purple 75w140 in the front or back diff.. on a 5.7 hemi quadra drive 2.
Whatever you decide to use be sure to add the Mopar friction modifier.

2006 Steel Blue 5.7L HEMI Limited 4x4 Build Date: June 9, 2006 Hour 14
Interior: Dark Slate/Light Graystone with Saddle Brown Leather Seats
Quadra-Drive II, NAV, DVD, Trailer Tow Group IV, Off-Road Group II, Remote Start, UConnect, Rear Backup Camera, Chrome Wheels,
Magnaflow cat-back exhaust, Daytime Running Lights enabled, 2" Rough Country Lift with 265/70R17 Goodyear Wrangler AT/S

Last edited by jeep5253; 02-14-2013 at 12:14 AM.
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post #5 of 16 (permalink) Old 02-14-2013, 05:22 AM
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Neither.... run Amsoil.

And as mentioned, dont forget the additive.

-Matt
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post #6 of 16 (permalink) Old 02-14-2013, 07:00 AM
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I'm running Amsoil and no problems, and echoing the above posts, use the friction modifier. I'm using the Amsoil version of that, too.

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post #7 of 16 (permalink) Old 02-14-2013, 09:55 AM
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I run Mobil 1 + friction modifier. 121,xxx miles without issue.

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post #8 of 16 (permalink) Old 02-14-2013, 10:25 AM
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Alright then, I'll chew my shoe. Have you guys found any benefits from upgrading you're differential fluids?


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post #9 of 16 (permalink) Old 06-08-2013, 09:25 PM
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Running quaker state with modifier in mine.
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post #10 of 16 (permalink) Old 06-09-2013, 11:56 AM
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Mobil 1

135,000 miles with no issues. I have ran it since my first oil change in both the front and rear diffs.




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