[351mustanger]

I am wanting to change the transmission fluid on my 2012 trailmaster 150xrs. I am not sure what type of oil to use for this. I found the fill plug located on the top right of the transmission, but on the bottom there appears to be two drain plugs. I am guessing one is not a drain plug. The manual gives no information on this subject. The only information I found is on a sticker on the cvt cover. It says "Lubricants: 15w40". Does this mean the engine and transmission take 15w40? I have seen others on here using 80/90 gear oil.

These are the questions I have:

1. What type of oil do I use in the transmission?

2.which one is the drain plug? The one towards the front or rear of the vehicle? Neither one I am refering to is the engine oil drain plug.

3. If one of these plugs is not a drain plug, then what is it?