Another Evapo-rust question

[slowpoke2]

Got a bit of rust in the tank so I was going to use Evapo-rust.  This stuff is supposedly pretty benign, but is it ok with leaving the fuel sender in the tank? 

[Pat Conlon]

As a general rule: Never leave a sender in your tank with *any type* of rust treatment.

[FJmonkey]

Any oxide type coatings may dissolve along the rust (oxide). Best not to take any chances.

[woodcreekpete]

I left mine in. Clean as a whistle and worked fine.

[FJmonkey]

I left mine in. Clean as a whistle and worked fine.

When was that cleaning done? How many miles (estimated)? If you have gone 3 or 4 tanks then it might be just fine.