My stock airbox, I think, is made of plastic ... at medyo hindi na siya maganda tignan coz of the dust residues.

Although engine washes sa detailing shops would work, I don't want my engine getting wet every now and then.

So is it safe to use a tire black polish to shine the airbox and its rubber intake tube?

[SIZE=1](I heard petrol-based wd40s and the like won't do any good as it "eats" or degrades rubber and plastic in the long run...)[/SIZE]

Also, safe din ba ang tire black to clean the radiator and aircon hoses and other plastic and rubber parts in the hood, say the fan assemblies?

Thanks in advance for your replies...