Originally Posted by FSETH

I think you are on the right track. I would do a couple short interval oil changes when the oil is nice and hot. I wouldn't put in any additives or anything else like that.

As far as the trans is concerned. I don't think any fluid is "lifetime fill". However, the problem is that there are possible risks to changing the fluid out for the first time at a higher mileage (say 100,000 miles).