Yes, you _can_ use the Mopar friction modifier with synthetic. Certain
synthetics (Amsoil and Redline are two that I know of) do not need it.
Amsoil's website says that although you don't need to add it, you can if you
choose. I don't.
Permatex ultra-blue rtv works just dandy for me. I just did mine yesterday
in fact. I used 1.5 cans of brake cleaner to get it all clean (after 16k
miles on the factory juice).
/Curt
Chelsea, MI
> I know this has been covered in the past. I would like to get the most
> current opinions from the group. I am going to service the differential on
> the Dak today. It's a 2000 4 x 4 with limited slip. I would like to use
> synthetic oil.
>
> Questions.
>
> Can I use the standard Mopar friction modifier with off the shelf
> synthetic
> oil?
>
> Has anyone used the Mobil1 differential lubricant?
>
> What sealant should be used for the cover?
>
> Any thoughts on drilling and tapping the cover after it's off to
> facilitate
> service in the future?
>
> Thanks all
>
> Patrick O'Day
> 2000 Dakota 4x4, 4.7L, CC
> Ztube w/9 inch big mouth filter
> 68 MM TB Ported and Polished
> 3" catback and Flowmaster 50
> Rancho 9000 Shocks
> Robert Shaw 755 180F Thermostat
> Mobil 1
>
>
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