EXACTLY which tranny fluid goes into

[Ramblin Fever]

our auto transmissions?

My owner's manual says Dex-3; however Haynes manual says Dex-2

My shop has used Dex-2 on my tranny over the course of 2-3 fluid change outs; have over 60k on their fluid, i.e. Dex 2 with no problems in shifting, slipping, etc.

So my question is, since I have a very mild leak, WHAT do I put into this tranny? Dex 2 or Dex 3, and are the two compatible with eachother??

FWIW - even if the Dex 2 is the wrong fluid, tranny's shifting wonderfully!

Oh, and I know it's been repeating 10000k times, but can one give me exact/precise instructions on -

1. Checking fluid level, on these no dipstick thingies?

2. Partial drain/refills through add/check fill plugs?

And, should one just barely let the truck idle for 3-5 minutes before procedure's, or can they be performed after doing basic city driving as well?

[Blue Bowtie]

Dexron III is completely compatible with transmission applications specifying Dexron II. Some other applications that specified D-II (like some power steering systems) may have a little trouble with the D-III, but transmissions should be fine with it. Version IV may be incompatible, so don't go there.

http://www.google.com/search?hl=en&l...22&btnG=Search

[rodeo02]

DexII probably wouldn't harm your 4L30E, but that is an out dated ATF. Use Dexron III or any Mercon/Dexron III universal ATF will be fine & is your most common off the shelf ATF.

Joel

[surferfletch]

III.

I edited this before, I thought.