Auto tranny flush '93 525i, Dexron ii or iii ???

[chapmanw]

Just wondering if there's any atf fluid that is highly recommended? stick to dealer fluid?

I was also wondering if there's any major difference between Dexron ii and Dexron iii. Can I use the iii. Is it synthetic? Thanks for the help. I've never done a tranny flush. Seems like the previous owner hasn't either.

[Dick Schneiders]

It is not synthetic. I have the same tranny in my 2, 1991 525i (made by GM) as your car, and Dexron III is what I have been using for years.

Just wondering if there's any atf fluid that is highly recommended? stick to dealer fluid?

I was also wondering if there's any major difference between Dexron ii and Dexron iii. Can I use the iii. Is it synthetic? Thanks for the help. I've never done a tranny flush. Seems like the previous owner hasn't either.

[632 Regal]

you can get Dextron III in Royal Purple, claims to be synthetic and not too expensive. Going to see if its synthetic now so i might end up editing this post.

it's synthetic.

here:
http://www.royalpurple.com/prodsa/matfa.html

[JayBMW535]

I use it, it is a really good product. my 533 has 203,000 and still going.

[Tiger]

Valvoline Dextron ATF (regular), Pennzoil ATF (semi-synthetic) or Mobil 1 ATF (full synthetic)

[glen-sj]

Dexron iii has a higher temperature rating than Dexron ii. Dexron iii can be used in Dexron ii systems, but Dexron ii should not be used in Dexron iii systems. Here is a link that might be useful, it is the exact A/T on my 92 525ia.

http://www.pelicanparts.com/bmw/tech...Fluid_Auto.htm