For my own knowledge base what is engine tape? What does it do in cars? I have looked under my hood and never seen tape.
Roseman may have been referring to a type of aluminum tape also used for ventilation. The stuff is really shiny, I have no idea what the reflectivity may be, but this is what I use for my hot air ducts. Regular duct tape can't take the temperature, that's why I had a joint come apart last Friday, this metal stuff does the trick!