... I know, I know, there are lots of threads and I thought this one might be useful here rather than other spots.
My intent was just to create a thread to merge some information, while confusing, to point out the differences in the appropriate fluid for the lsj trans and hopefully assist some noobs if needed...if they search.
To begin with the master:
Which also contains the TSB link that WOP discussed.
When I was researching about changing my own fluid I came across some inconsistencies such as:
Part number 21018899 was superseded by part number 88862472.
#88862472 is the newer and slightly lighter weight trans fluid for the LNF's.
The slight differences - shortbus:
the original stuff 05-07 balt and 04 07 rl are the same the new 08-10 is slightly different and better in cold weather
From Maven the guru:
"Gear oil part number 21088899 lsj
88862472 fluid is the fluid that is spec for the new F35s as used behind the LNF. Its yet another unique Castrol GL type fluid, the original stuff is "BOT 0063", the new stuff is "BOT 0402", the major difference being its thinner than the original. The 21018899 is roughly something between a 75w85 and a 75w90, the new stuff is roughly between a 70w80 and a 75w85."
To this end I think the appropriate GM replica number I have found mirroring the saturn number of 21018899 is GM #88861800. I am under the impression that 88862472 probably supersedes the GM 88861800 number also.
All of the fluids seem to be available. 2101899 is on gmpartsdirect.com in packs of 6 but they sometimes list things that are unavailable or not in stock and the local dealers here have the part number, it is a valid number, but can't order any of it, my dealers being gm folks.
88862472 is on gmpartsdirect, gmpartscenter.net and saturnparts.net
If anyone has any other information that might be useful to relate the fluids or specific properties I would appreciate knowing it. Also, I can't see why 88862472 wouldn't be an acceptable substitute for the original 2101** fluid unless someone knows otherwise?
F35 (MU3) transmission - Wikipedia, the free encyclopedia