Toyota 4runner transmission makes squeaking noise when rolling slowly, or in neutral, or when I let the clutch out. Squeak goes away when I rev the engine.
I change the transfer and transmission fluid every 30k miles, I grease the driveshafts every 8k miles or less, I don't ride the clutch. This problem started long into my ownership about a year ago, and it's only gotten worse.
I'm afraid it's the pilot bearing, but the symptom isn't 1 to 1, and revving it makes it go away, and I've done nothing to deserve this sort of issue. It's a 4wd with the W59 transmission, and it has 230k miles.
The sound is more noticeable in person, especially against a wall. It sounds to be coming from under the car. Year: 1998.