It's naphtha if I remember correctly. Don't know if there are additives.
Karl

"carl mciver" wrote in message
ink.net...
"Grant Erwin" wrote in message
...
| Go to a general-purpose motorcycle store and buy a 2-part coating that
you
use
| to line the inside of old motorcycle gas tanks. They should work well
for
this
| too, very similar application. - GWE
|

I don't recall what's in Coleman fuel, but alcohol and most gas tank
sealers are a very bad combination.