Jenolite & rust in general

[The Richards <smrm@coastalnet.com>]

I've seen some postings on Jenolite, and an advert in Classic and Sportscar.
Its properties read like Extend. Does anyone know if they're basically the
same stuff. I'm especially in need of a rust inhibitor that can withstand
high heat -- if any such animal exists.

Michael, New Bern, NC