WTH: Change my diff fluid.

Looking for someone to change the front diff fluid in my 94 blazer.

I have the new fluid ready to go.

The reason i cant change it is because i have to suck the fluid out(please no dirty comments,lol) and somehow get the fliud back in.

I tried the syphin thingy i had, but didnt work. I know valvoline and that want like 40 bucks but dont want to pay that, and just wanted to see if anyone on here wanted to make some extra money.