Firewall cleaning

[67since67]

Originally Posted by firstgenaddict

HD EASY OFF oven cleaner -
FWIW The WEAKER fume free version is useless.

X2 on the EASY OFF HD!

Something with even more toxic fumes that has saved me countless hours on a current cleaning and preservation project, Aluminum Brightener from NAPA. Removes grime like nothing else I've found but doesn't harm factory paint or EDP on underhood metal and firewall blackout. Spray, wipe it off, neutralize with water, and follow with wax.
Also spectacular results on phosphate and zinc stuff (horn relay cover, ash tray) and of course aluminum (alternator, a/c lines).