[Vwdiesel] BIG Ooops!

[Photo Bug]

Hi, everyone!  I'm just learning about biodiesel and lovin' it better and better the more I learn about it.  However, we loaded our first 40 gallon brew into my brother-in-law's portable storage tank that he had just purchased. . .used.  We assumed it was clean...MISTAKE!!!!!!  Whatever was in there, it contaminated the entire biodiesel batch that we had made.  One syrupy white gooey mess!!!!!  OK, that's the BooBoo!  Could someone please suggest what we can use to best completely clean out the tank so we can seriously re-use it.  We emptied out the gooey mess, but we want to have a clean storage on the inside so no more gooey messes!    Thanks!
 
Best regards,
Tom
 
'03 Jetta TDI
'83 Caddy LS diesel
'82 Rabbit LS diesel
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