Limited Slip Differential Fluid? - Page 6 - DodgeForum.com


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Limited Slip Differential Fluid?

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  #51  
Old 03-26-2008, 06:38 PM
NYPANAMA42
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Default RE: Limited Slip Differential Fluid?


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ORIGINAL: HammerZ71

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ORIGINAL: NYPANAMA42

5W-30 Extended mileage. good for 15K Miles. but there"s no way i'll keep it in there that long.....probably change it out around 9K-10K miles...
The oil isn't the issue, it's the filter. I have just tried Royal Purple in the Jeep and with a good filter (I only use Mobil 1 or a Wix - but have read good things about the K&N, and I like the nut on the top, so I may try one next) and I'll extend my normal 3k change to 6k, which is the longest I'll trust ANY oil filter for...
OK, i see your point......never really thought to much about the oil filters. I automatically figured that they could handle the miles without a problem....Presently i am using Mobil 1 oil filters, which i BELIEVE is capable of handling the oil and miles..If not, then i might try something else.
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  #52  
Old 03-26-2008, 06:57 PM
mmstar23
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Default RE: Limited Slip Differential Fluid?

so if i dont have LSD then what fluid do i need?

royal purple gear oil 75/90?
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  #53  
Old 03-26-2008, 07:44 PM
NYPANAMA42
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Default RE: Limited Slip Differential Fluid?


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so if i dont have LSD then what fluid do i need?

royal purple gear oil 75/90?
No Mazola Corn oil....since you don't have LSD....then when your truck gets a little older you can switch to 75W-90 Gear Lube...
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  #54  
Old 03-26-2008, 08:07 PM
NYPANAMA42
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Default RE: Limited Slip Differential Fluid?

Just joking...Not really sure. Maybe one of the others will chime in...
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  #55  
Old 03-26-2008, 08:41 PM
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Default RE: Limited Slip Differential Fluid?

75w-140 recommended for Chrysler 9.25 rear...
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  #56  
Old 03-26-2008, 08:46 PM
mmstar23
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Default RE: Limited Slip Differential Fluid?

ok. ill pick up some 75/140 royal purple gear oil when i head back to work in like 10 minutes
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  #57  
Old 03-27-2008, 04:29 PM
schmedly
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Default RE: Limited Slip Differential Fluid?

I didn't read the entire thread, but there is a lot of apples to oranges compaisons here. The 2500 uses no friction modifier in the newer trucks as they use a totally different type of unit that does not use friction clutches. Friction modifier is supposed to be used on friction type units even if you use synthetic lube. The 4 oz vs the 5 oz spec on how much modifier has to do with which year and rear end manufacturer was used. The older Dodges used the Dana differentials and they called out a 5 oz. spec. I know because I had a '98 with the Dana. The newer trucks with the American Axle rear end uses 4 oz of friction modifier. Dealerships in my area get around $8 per 4 oz. bottle. The older trucks also did not spec out synthetic rear lube as they do now and the viscosity spec changed with that as well.
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