Hi, I inspected a Roadster yestersay. I performed a short road test and while travelling at 30 mph it basically went into neutral and stayed for a bit. It was also lurching when starting from a stop. My searching indicates low oil level - perhaps I am wrong? When I was looking in the engine bay with a torch I noticed that there was oil around the black plug at the top of the bell housing. I don't know what that plug is for but I'm wondering whether oil can come out of that plug if there is a leak at the join of the torque converter and the transmission? The owner didn't seem to be aware of any oil leaks and there was nothing on his garage floor. He has had the car only 2 years and the car is not used much so perhaps the oil loss occurred under the prior owner?
Any thoughts?