i should get this bolt buster , i still use the propane bottle , but open flame is a mess . it is strange that will all the mechanic on this forum i never see one.for the rust on our cars here in Canada there not so much to do when you buy a use car . if rust proofing is done on the new car , immediately ,done correctly and every year , yes that help .
happy new year, and no worry for the email , no rush .