Want to get some good gear oil in my trans to help alleviate some of the resistance when shifting occasionally, such as the infamous 3rd gear notch. A couple questions:
1) With 182,xxx miles, would you just change the gear oil or is it worthwhile to do a full flush?
Planning on getting Amsoil 75W90 GL4, FSM states 4.5Q for a fluid change, do I need more if I have it flushed?

Thanks in advance

 

There is no "flush" on a manual trans.

Drain and fill.

 

Well that makes that easy. Thanks.

 

yeah, what he said. And if there was a flush, I still would not do it.

Drain and fill is the way to go.

 

I drained and filled my auto several times. At 100K I decided to have the tranny flushed, I was pleasantly surprised with the results: smoother shifts and better performance(seat dyno).

High mileage automatics that have not had regular fluid changes should not be flushed.