Hey forum,

I would like to give you all a bit of a backstory to get you up to speed. I have been hearing a whining noise coming from under the hood that gets louder as the engine speed increases the engine is naturally aspirated so I know its not a supercharger. Anyway i finally got sick of hearing it so i checked the transmission fluid thinking that was part of the problem when cold the trans. fluid looks normal for the most part when its warmed up it look like water and has the consistency of water. My question is how often should the fluid and filter be changed on the 4T65-E transmission? Any help would be appreciated.

Thanks in advance,
Tgarison