I use Mobil 1 10w-30 in both our 2000 Impala and 1997 Dakota. I use 15w-50
in my 1950 8N Ford tractor. It starts a lot easier in cold weather and the
blue puff of smoke at start up went away. 5000 mile interval on the
vehicles and once a year for the tractor. Once I get the conventional oil
I've got on hand used up, I'll be using Mobil 1 in everything, even the lawn
Ken, I have also used Mobil 1 products in my gas engines, before I
owned a Cummins, with good success. Now I use Valvoline Premium Blue
Synthetic 5w-40, as recommended by Cummins.
However, the OP's question was in regard to ATF. I am also interested
in any opinions of Mobil 1 ATF or any other brands besides Mopar. It
is time to replace the ATF in the tranny and transfer case and time to
change the gear oil in the diffs.
Do you have any experience or recommendations about ATF and gear oil
other than Mopar?
I used Mobil 1 ATF in a manual transmission that called for ATF as lube. It
seemed to make the trans shift a bit easier and smoother. AFA auto trans
use in a Mopar, I haven't used it. My truck is happy with ATF+3 and I just
bought a case of it at a clearance price. This batch was made by Valvoline.
Just a thought with some syn transfluid. You might want to check with DC
before hand. Some makers will void a warranty if a non approved fluid is
used in a trans. GM did that with the ZF manuel box in the Z06.
I have used Amsoil's ATF in my 5.9l Durango for all changes since changing out
the factory ATF at 20k miles with no
negative effects. It seemed to shift more smoothly with the Amsoil but it may
be due to purging the old ATF (likely with
some accumulated debris/contamination) with fresh ATF. since then (2 more
changes) it continues to shift very smooth.
Amsoil's ATF seems to work and I will likely keep using it as long as it
continues that way. regards, Joe.
Life may not be the party we hoped for,But while we`re here we should dance
Personally, I use Royal Purple exclusively in my 04 RAM Hemi. That includes
the tarnny, transfer case, and diffs. Unlike many, Royal Purple already
contains the additive needed for the limited slip diffs. My tranny runs
cooler and shifts more positively since I changed all fluids over at 2500
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