if you mean the plug on the bottom. yes that's for draining
to check tranny oil there should be a plug about halfway up one side - poke yer pinky in, and you should find the oil level near the hole - fill until it just starts to spill, slam the plug back in!

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics