I've used gold heat foil in the past, works amazing, low weight, low cost.
» Click image for larger version
http://www.aliexpress.com/wholesale?...REFLECT+A+GOLD
25$ gets you lots of material to do the underhood and whatever else you want to protect.
In my case, the turbocharger bakes the hood paint, I found this out when I removed a clear bra and it pulled off 1'x1' patch of paint.
Most cars don't generate as much heat as my ghetto turbo setup does so it might not be critical for you.
If you want to try a sample of the stuff, I can give you some to test.
Last edited by Modelexis; 06-19-2016 at 07:41 PM.
"Anarchism is not a romantic fable but the hardheaded realization, based on five thousand years of experience, that we cannot entrust the management of our lives to kings, priests, politicians, generals, and county commissioners."