Any lube engineer expert out there?

Transmissions seem tobe trouble -- but how about the info in the TSB -- are the people whowrite themas confused as we are ???
USE OF ATF+4 vs ATF+3IN A PRE-1999 MINIVAN.
VERY CONFUSING SERVICE BULLETINS - Contradict each other. see below --
~~~~~~~~~~~~~~~~~~~~~~
*TSB:21-006-01, 6/29/2001 IN LARGE LETTERS says" NOTE :THIS BULLETIN APPLIES TO ALL VEHICLES EQUIPPED WITH CHRYSLER AUTOMATIC TRANSMISSIONS EXCEPT 1999 AND EARLIER MINIVANS." -- very SPECIFIC


-Three Years Later-

* TSB 21-004-04, - 3/16/2004,WHICH SAID insmall letters= " NOTE: This bulletin applies to all transmissions manufactured by Chrysler except for 1999 and earlier minivans with the41TE/AE transmission" ------ well nowsmall letters --must be not as SPECIFIC huh!!!


*But than on April 14, 2006 The TSB said to get rid of all the old TSB??? (WHY SUCH A BIG SWITCH IN POLICY ) "THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 21-004-04, DATED MARCH 16, 2004, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A COMPLETE REVISION".-----NO MENTION OF "1999 AND EARLIER MINIVANS"

~~~~~~~~~~~~~~~~~~~


So who really knows what to use ???

Makes me think they (CHRYSLER)orIginally felt ATF+4 wasNO GOODto usefor the pre99 minivans -- than they thought well were goIng to go to ATF+4 so letsnot be so hard on the OIL COMPANIES they'll want to discontinue AFT+3 so will use small letters meaning --customer GOOD LUCK ---- Than they decided well lets just drop our reference stating ATF+4 is NO GOOD FOR PRE 1999 MINIVANS --- and let the poor consumer get the dirty end of the stick !!!

HELP John

 

Well there is a new TSB 21-014-07, If you like me send you a copy just send a pm. Leonard

 

Perhaps the issue is with 'torque converter shutter'
with the older designed torque converters
when using the ATF+4 9602
instead of the earlier ATF+2 or ATF+3 fluids.

My 'gut' feeling would be to stick with ATF+3
and add a bottle or two of red or platinum bottle Lubegard

http://www.lubegard.com/automotive/t..._platinum.html

There is a long paper about ATF+4
published in the Society of Automotive Engineers Journal magazine
paper# 982674

Lubrizol Inc. created the ATF+4 type 9602 for Chrysler

 

Well thank You Leonard. I just looked up that TSB -great.

It like the 2006 TSB doesn't specify pre 1996 minivans as a listing.
Thats kind of what seems to have held some vageness to what they recommend ------- going back to the prior TSB where they specificly said" NO-NO-NO to using ATF+4 in pre1999 minivans " at least now they list the 1996 and newer -------- but not 1995 and older !

Well I did solve the problem --- I got some "NOS" Havoline ATF+3 from a local oildistributor. The cases look to be 10+ years old -- so I can put in what was called for.

Maybe the use of ATF+4 would be okay--maybe even better --- but with the questions/doubts regarding TC shutter/Seals/Bearings as some have said I guess I will use this for now.

Everything I own (except a Backhoe) is a manual transmission ---- I got to have a HIP replaced & after that major back/spine surgery - so I figured I best have something with an 'automatic' - and easy entry/exit/good seating position` and this 1995 era minivan is great.
We areretired and have a collection `of old cars from the 1920's to 60's -- so we do a lot of playing around -- if the back isn't hurting.

John

 

Thanks Hank I saw reference to the SAE paper regarding Chrysler developing a ATF fluid - but I didn't see the specifics on it.

As I mentioned I kept looking ------- and did find some NOS ATF+3 so we can go that way like you mentioned.

Thanks John ------ looking for trouble - I sometimes think..