Automatic Transmission-Couple Questions

04 Cav with the automatic transmission. This is the first vehicle that I have owned with a sealed autotrans. Use to be a rural mailcarrier(100 mile route with 400 stops) and I always installed an external autotrans cooler and changed my fluid/filter every 20,000 miles. Now this car is a daily driver that my wife drives to work. Her commute is 40 miles round trip and 95% interstate driving so the autotrans is not being abused. So is the fluid and filter in these transmissions ready to go for the life of the car or is there a mileage interval that both should be changed? Does Chevy use synthetic ATF in these transmissions? Thanks!

every 30K miles they suggest you do them. Mercon/dextron III but the stores sell V and it supersedes the III.

every 30K miles they suggest you do them. Mercon/dextron III but the stores sell V and it supersedes the III.
DEXRON VI supersedes DEXRON III and it is far superior.

DEXRON VI supersedes DEXRON III and it is far superior.When did they come out with Dexron VI ? I know Ford had Mercon then Mercon V. I think the Mercon V was a semi-syntheic ATF. I use to drive Dodge Spirits with the tried and true(and VERY reliable)3-speed auto trans. and they came from the factory using ATF 7176 ATF then it went to ATF+3 and when I bought a 2000 Neon with the 3-speed it took ATF+4. Was told it was a fully synthetic fluid. Now I think there out with ATF+6. What was funny with my 95 Ford Explorer the autotrans took Mercon ATF and the power steering took Type F ATF.

When did they come out with Dexron VI ? I know Ford had Mercon then Mercon V. I think the Mercon V was a semi-syntheic ATF. I use to drive Dodge Spirits with the tried and true(and VERY reliable)3-speed auto trans. and they came from the factory using ATF 7176 ATF then it went to ATF+3 and when I bought a 2000 Neon with the 3-speed it took ATF+4. Was told it was a fully synthetic fluid. Now I think there out with ATF+6. What was funny with my 95 Ford Explorer the autotrans took Mercon ATF and the power steering took Type F ATF.
GM started using it in production on April 4, 2005 at the Willow Run, MI plant. The announcement to GM dealers was in the early spring that year if I recall correctly. If I can find a copy of the TSB I will post it.

Get the highest DEXRON you can find. I work P/T at advance auto parts. Highest we carry is the V.

Get the highest DEXRON you can find. I work P/T at advance auto parts. Highest we carry is the V.
Here is an article on DEXRON VI, it says it replaces DEXRON III. Look at the bottle again, I don't think the V refers to the DEXRON spec. If it does specifically say DEXRON V, I would like to know specifically who bottled and labeled the fluid.http://www.imakenews.com/lng/e_article000384801.cfm?x=b11,0,w
Here is some info on Mercon V which says can be used where DEXRON III is required but that is an older spec for DEXRON.http://www.imakenews.com/lng/e_article000564317.cfm?x=b11,0,w