Is 1st trans. fluid change OK at 100K?

[zlathim]

Originally Posted by StreetRage320

Transmissions with heavy wear will have abrassives mixed/suspended in the fluid, ironically the abrasives can assist and help prevent slipping where tolerances are not longer to spec. The theory is that if you flush them out with clean transmission fluid, the result can be you loose the abrasives in the fluid and now you may have slipping issues.

IMO I would proceed with your fluid/filter/gasket change.

good luck op

This is my understanding as well. All of those suspended particles are actually assisting the friction plates in the clutch packs. Once you drain all of the fluid out, the suspended particles go with it and you no longer get the friction benefit. In some cases, the trans is far enough gone that it will start slipping.

[mike12345]

I don’t know what you’re talking about.

Just drain the fluid, maybe pump out what you can, refill with the same volume of new fluid. Drive it and do it again.

[pzero]

Originally Posted by zlathim

This is my understanding as well. All of those suspended particles are actually assisting the friction plates in the clutch packs. Once you drain all of the fluid out, the suspended particles go with it and you no longer get the friction benefit. In some cases, the trans is far enough gone that it will start slipping.

FYI for future reference. I,m sure you have done or not done the service as of yet. The dealer will do a full trans flush meaning, trans fluid and pressure will be going into the filler hole while they drain the old trans fluid out from the pan.

This will drain out all the particles, in which can cause trans to slip. At 100,000, I would not do the full flush and only do a partial trans fluid change. Drop the pan, let is drip out as much as you can, install pan and gasket and refill to spec and you should have no problem. Good luck to you.

[lemontwist]

Originally Posted by jcampos

That sucks. Changed mine plus rear differential at the same time when I hit 25k. Then changed both trans and diff again at 50k. I will probably be leaving mine alone for a good while now. Of course, I have an LS3