well i hate to be the barrer of bad news but in my experance if you burned the trans fluid up in a couple weeks you might have more problems than fluid condition. however if you did put merc. v in it and it was supposed to have dex3/mercron, which is not merc.v, merc.v is a totaly diffrent fluid all together, i would deffinatly get it out as soon as you can and not drive it any further than absolutly nessary. take it somewhere that has a trans flush machine and have them flush a good amount of fluid through it, 25 or 30 qts. if yuo put the wrong fluid in it. hope this helps and hope your trans. is ok.