Which transmission fluid should I use

Tiny
DAN02338
  • MEMBER
  • 2004 CHEVROLET IMPALA
I am a self maintainer of my automobiles since I got my first car. I am currently driving the car listed above it is the LS model with a 3.8L engine. I am going to change the transmission filter, and as much fluid as possible. The agent at NAPA (seemed like a professional-not overly anxious to sell) told me I needed Dextron VI Synthetic fluid, he even double checked this with a Chevrolet dealership up the street. I have a problem. My manual states to only use Dextron III. Which fluid should I use?
Saturday, November 1st, 2008 AT 9:56 AM

1 Reply

Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
Dexron VI is the recommended fluid. GM has upgraded to this fluid due to its improved performance. Fluid Types

Transmission Fluid Type

Type. DEXRON III or Equivalent
Capacities

Transmission Fluid

Pan Removal. 7.0L (7.4 Qt)

Overhaul. 9.5L (10.0 Qt)

Dry. 12.7L (13.4 Qt)
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Wednesday, March 17th, 2021 AT 3:49 PM

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