auto rx or other flush/cleaners

I have a 2001 Malibu LS with ~ 85,000 km's.

I have had the usual issues...wheel bearings (3), fan controls (2), frnt brakes (3) and my intake gasket is suspect.

I wanted to flush the engine and transmission this spring as precautions.

I am not a big fan/believer in the 'expensive' cleaners, but have heard a lot about auto rx.

Anyone ever use this or know of it?

Also, I read here there is no way to access the auto tranny...no dipstick...so that would mean there is no way to top it up, or put flush in it anyway?

Thanks.