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Outta my mind
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1,289 Posts
Discussion Starter #1
Hi, i have a 1989 S-10 Blazer, 4.3L. Automatic. This may sound like a stupid question, but do i use Dexron III in the tranny? I know the owners manual calls for Dexron II, but isnt that the same thing as III? Isnt Dexron III just an updated version? Let me know.. i just wanted to make sure.. thanks
- Mike
 

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Black SS
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5,869 Posts
Yes Im about 99 % sure you are right. Use dexron III. I did a trans service on a friends old 3.1 liter lumina, the owners manual said dexron II also.
 

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295 Posts
dextron III is an updated dextron II. as far as i know (not much) they added more lubricants and a little better heat resistance to the mix. i cant find dextron II any more in the parts store and when i ask around (even dealer) dextron III is the same.
 

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ZR2 Interceptor
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662 Posts
Dextron III replaced Dex II. I know of no place that sells II anymore and if there was, the shelf life would be pretty old. Use Dex III.
 
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