2004 Pacifica and synthetic oils.

I just changed my oil to 10w-30 Mobile 1.

I was thinking of changing the transmission and transfer case to
synthetic as well. Anyone else with a Pacifica done the same? Any
problems? Recomendations?

TIA.

Jimmy

 

read your manual? what kind is in it now? i say that becuase they were
using synth in some transmissions allready.

 

If Owners manual states ATF+4 for the trans, stay with ATF+4, or risk
damage or weird operation like TC shudder not covered under warranty.
Most, if not all, Chrysler automatic transmissions are designed around
ATF+4.

If the final drive and transfer case use standard 80W or 90W gear oil,
can't hurt.

 

Factory fill in the Pacifica transmission is ATF+4. NEVER use any other
type fluid unless you want to rebuild the transmission for fun.

 

Thanks, Mike...

Owners Manual says the following:

Automatic Transmission - Mopar ATF+4 Type 9602 Automatic Transmission
Fluid.

AWD Power Transfer Unit - Multipurpose Gear Oil SAE 80W-90 meeting API
specification GL-5.

AWD Overrunning Clutch - Mopar ATF+4 Type 9602 Automatic Transmission
Fluid.

AWD Rear Carrier - Multipurpose Gear Oil SAE 80W-90 meeting API
specification GL-5.

I'll check out synths for the AWD Power Transfer Unit, and rear
carrier. Thanks again. Will leave tranny and Overrunning Clutch alone
per the manual. Don't need TC probs or others!

Jimmy

 

I believe ATF+4 is a synthetic fluid. Regardless, I wouldn't use anything else in a
new Chrysler transmission. (Or an old one for that matter). LH differential units
have a service warning not to use synthetic gear lubricant. I would be sure your AWD
units do not have a similar warning in the service manual before using synthetic
lubricants.

 

Factory manual says I can use synthetics in the crank case. (at normal
drain intervals with filter) The section regarding the Trans,
specifically mentions use other than "recommended fluid may cause
deterioration in transmission shift quality and/or torque converter
shudder". Oh well...thx

Jimmy

 

Greg Houston wrote:
LH differential units

Does anyone know why that warning is there? Bad reaction with ATF+3 or
+4 if it leaks past the seal between the diff and the tranny? I've
always been curious.

 

The Pacifica drivetrain is standard Chrysler hardware, with the standard
Chrysler recommendation: follow the factory recommendations in your owners
manual. Anything else could destroy your transmission, at your expense not
theirs.