Can too much fluid cause an issue? How much is too much? Over the max line? Mine might be a tad over full. Ill check the fluid level in the morning when I get to work after its had time to warm up.Maybe some good info here maybe not. I just had a oldmobile silohette show up in to my shop. It may have been a 60 and not a 65 e, but that doesn't matter in this situation. Anyway they just had their trans "serviced" by a pep boys and ever since then they noticed a noise and it was at low speeds like in a parking lot that they heard it. I told them it was most likely unrelated, but decided I should further investigate. Turns out they didn't service it they just did a flush or maybe did a flush I don't know basically the pan wasn't off. Checked the fluid level... barely touched the stick and it was warm. I told them it was low but not enough to be of concearn... boy was I wrong. We agreed to fill it till it got to proper level and document it for whatever reason we need it for. Three qts!!!! It took 3 qts and it registered on the stick before I put the 3 qts in. Also the noise went away, and i had the customer drive it to verify it. It sounded as if the chain was rubbing when I heard the noise initially... almost like a can of marbles rolling around.
