Thread: Transmission pan drop.

I would not put dex VI in a trans designed for III, gm switched to VI in the 06-08 range.

Originally Posted by TheOtherNick

I would not put dex VI in a trans designed for III, gm switched to VI in the 06-08 range.

Wow, if you don't know what you are talking about, don't post.

Dexron VI is a new and improved transmission fluid that is designed to mix perfectly fine with all older Dexron fluids. Also, it is the recommended replacement fluid for all trannys that ran any older Dexron fluid. The best fluid availble when our cars were made is Dexron III. That was what they recommended and thus show in the old books. But with the new improvements in fluid, GM released Dexron VI and does not allow anyone to produce Dexron III fluid anymore. All transmissions that used to use Dexron III fluid should be using Dexron VI now.

The VI will work in older Tans's but not vise versa. The kicker is the cost of the VI it costs over double the amount of the III maybe close to three times the cost...

Originally Posted by tms8582

The VI will work in older Tans's but not vise versa. The kicker is the cost of the VI it costs over double the amount of the III maybe close to three times the cost...

I buy valvoline full synthetic Dexron VI fluid at the local NAPA for $5.50 a quart. Not a bad price for full synthetic fluid. Other brands are cheaper yet. I think the best I can remember in recent years was around $3/quart of Dexron III tranny fluid that wasn't full synthetic. And that was probably 10 years ago. Look how much the price of engine oil has gone up in the same amount of time.

Originally Posted by FordMan77

OP- Before I forget -once you drop the pan and remove the filter, be sure the rubber o-ring on the end of the filter where it goes into the trans. is removed as well. They often get stuck in the trans and you have to use a pick or something to get it out.

I just leave it in if it stay in the tranny. Actually, I don't think I have ever changed the one in my GTP in the 160k miles and several filter changes. In my opinion, if it stays in the tranny, just leave it there and install the new filter and throw the new ring away.