Diff Fluid Change?

**mram10** · 11-30-2012

I googled, but couldn't find the best type of fluid to use for diffs. Also, is there a good how-to out there for my 98 GTP? Thanks guys.

**Fivefingerdeathpunch** · 11-30-2012

You mean transmission?

The dipstick says to use dexron 3, you can use either dexron 3 or dexron 6, the newer version.

**matt5112** · 11-30-2012

you have a transaxle.

Its all one unit, with one fluid system.

**mram10** · 12-02-2012

Well, I feel dumb. I thought there would be something on the rear other than just bearings. Is everyone using Dex3 or Dex6?

**DirtDog** · 12-02-2012

I use dex 6 but I also have a 2006. Us prolly be better of with what the owners manual says. Dex3

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**mram10** · 12-03-2012

Thanks guys. I got this car with 140k but had a new motor and tranny (5k miles) in it. Trying to shore up all the other things that could cause me problems.

**fubar569** · 12-03-2012

Dex 6 supersedes Dex 3 and can be used in all prior Dex applications where 3 was specified or accepted.

If you read the data sheets on Dex 6 vs Dex 3 you wouldn't have any doubt as to which one to use...though EITHER will work in your application.

The only downside to Dex 6 is the price. it's about 2 to 3 times that of Dex 3