New member screw up
 

So I'm at work today in my 550 dump and the def light comes in and says I have 95 miles until speed reduced to 50mph. So are mechanic was out on a service call and I told him this needs exhaust fluid he told me to go buy some but being as I don't have a company card I did not. So I get back to the shop and there's 29 miles until the speed is reduced so I go into the shop to find exhaust fluid but for some reason I grab transmission fluid and dump 2 quarts of transmission fluid in the DEF tank. What's going to happen? I'm kind of worried about it