Originally Posted By: TooManyWheels
Vaseline is an acceptable alternative to automatic transmission assembly gel (for o-rings, and for packing the pump, as Trav mentioned for engines).
I've got a somewhat funny story about petroleum jelly that happened to me about 4-5 years ago. I was in a large WM looking for petroleum jelly. I knew where it used to be, but this store had just recently remodeled and they had moved everything around. Obviously their "associates" were trained to be extra helpful because one young lady came right over to me and asked if I needed help. Without going into any extra details whatsoever, I told her that I was looking for the petroleum jelly. She looked down at my crotch for a good 3-4 seconds and said that while petroleum jelly is used by a lot of people, she recommended that I buy KY Jelly instead. I busted up laughing and told her that I was doing some mechanic work and that I wanted petroleum jelly to hold some pieces together during the transmission assembly. She had a confused look on her face, but she then directed me to the area that sold petroleum jelly.