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Old 04-03-2011, 02:04 PM
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Quadra-drive II diff oil....royal purple vs. Mobile 1

OK folks....let's hear everyone's opinions/experience. Mobile 1 75w140 vs Royal Purple 75w140...
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Old 04-03-2011, 04:17 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

always used mobil1, no problems
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Old 04-03-2011, 04:21 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Royal Purple will cause the MDS to shift a lot harder. There is a thread on this already. Never use anything outside of OEM when it comes to certain thing.

Royal Purple would be fine in my 3.7 with no MDS but would could cause a disaster for your engine.
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Old 04-03-2011, 04:35 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Quote:
Originally Posted by lll2for3lll View Post
Royal Purple will cause the MDS to shift a lot harder. There is a thread on this already. Never use anything outside of OEM when it comes to certain thing.

Royal Purple would be fine in my 3.7 with no MDS but would could cause a disaster for your engine.
he means gear oil, not motor oil
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Old 04-03-2011, 06:31 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Quote:
Originally Posted by SvenskaJeepGuy View Post
he means gear oil, not motor oil

Aye....I've only ever used mobile 1 in any of my engines. Nothing but good experiences.

I used mobile 1 75w140 in the rear diff today with about 4OZ of limited slip additive. Seems to be OK so far. I have the faintest amount of seepage from three of the bolts but everything else seems good. I used about a 1/8 beed of RTV. Think that was enough? It should cure by tomorrow and I'll wipe it clean and see if I get anymore leakage.

I bought 2 bottles of royal purple for the front but can't find a 14mm hex Allen wrench to get the fill plug out. Going to tackle that this week.
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Old 04-03-2011, 06:48 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Quote:
Originally Posted by kkuty View Post
Aye....I've only ever used mobile 1 in any of my engines. Nothing but good experiences.

I used mobile 1 75w140 in the rear diff today with about 4OZ of limited slip additive. Seems to be OK so far. I have the faintest amount of seepage from three of the bolts but everything else seems good. I used about a 1/8 beed of RTV. Think that was enough? It should cure by tomorrow and I'll wipe it clean and see if I get anymore leakage.

I bought 2 bottles of royal purple for the front but can't find a 14mm hex Allen wrench to get the fill plug out. Going to tackle that this week.
i bought a 14mm hex head socket at ace hardware for $10 for that screw
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Old 04-03-2011, 07:10 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Quote:
Originally Posted by SvenskaJeepGuy View Post
i bought a 14mm hex head socket at ace hardware for $10 for that screw
Nice. I went to advance, auto zone, sears and home depot. No luck.

I'll check ace tomorrow. Thanks.
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Old 04-03-2011, 07:21 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Quote:
Originally Posted by SvenskaJeepGuy View Post
he means gear oil, not motor oil
....................oh, hahahahaha.

I'd still stick with what the manufacturer prefers.
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Old 04-03-2011, 07:24 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

Quote:
Originally Posted by lll2for3lll View Post
....................oh, hahahahaha.

I'd still stick with what the manufacturer prefers.
I agree....but think it's a sham that Chrysler specifies mobile products only. Threes no way they engineer their own stuff, it's gotta be rebranded. Don't you think??
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Old 04-03-2011, 07:30 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

I have no clue but I do understand what you're saying.
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Old 04-03-2011, 09:34 PM
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Re: Quadra-drive II diff oil....royal purple vs. Mobile 1

I use Mobile 1 in my diffs my friend uses Royal Purple in his. To me its personal preference.
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