What is the best product to use on the intake manifold when cleaning an engine. I was thinking of using metal polish but the manifold doesn't look like it bare metal. Any suggestions?

 

not going to get a shinny finish, i just use G101 diluted and just get it clean stock look rather than shinny, if it bugs you get it powder coated

 

Diluted APC and a brush should be all you need to clean it.

 

Thanks guys. There is a little bit of baked on dust and I wasn't sure how to handle it. Not concerned about shiny look just want it to be clean. I tried some detailing spray and it didn't clean it. Maybe I will do APC like Simple Green or something and scrub it a little but hopefully will get a little better results.

 

G101 is the best stuff iv used it can be used everywhere interior,wheels,engine and its pretty cheap i will post dilution rates for you.

G101 dilution rate
degreasing hot 1:20
degreasing cold 1:8,
general cleaning hot 1:50
general cleaning cold 1:30<--------- interior
bug or ink removal,wheel cleaning and polymer removal 1:5 <------ that one for engine inlet manifold

 

after the all purpose cleaner a decent metal polish will restore some shine to it, something like Autosol, it requires a lot of rubbing though. I like Spray Nine cleaner, it is easy found over the counter at most hardware or auto parts stores.

 

Thanks guys!

 

This^