Advice for a dirty motor

The most obvious thing you'd notice is how dusty the whole area under the hood gets. A light/medium brown pastel dusting would help there. As for leaks (and since it's a Chevy you're modeling, it leaks), you can use some burnt umber and also black; work it in around the valve covers and around the oil pan. Paint the hoses and fan belts a dark grey instead of black to simulate wear. Looking forward to seeing your build!

Glenn

I'm practicing on weathering engines myself.The Tamiya 'rust' colors in their weathering kits are a good place to start.

I applied the powders wet to the exhaust manifold,then dullcoated when dry.

i agree on those colors. i always paint my tires and road wheels engine gray instead of black and most of my frames are burnt umber. you can use some stippling for a rough finish. for rusty mufflers i stipple MR SURFACER than paint metallic grey over umber over black with a touch or red; one on top of the other without letting them dry first. also for the burrnt chrome look, eye shadow works or various clear colors like orange over blue.

Thanks y'all. I have been reading a lot about Mr.Surfacer. I think I need to get some.

Tataki Sila-Jing

Thanks y'all. I have been reading a lot about Mr.Surfacer. I think I need to get some.

You can just as easily use Squadron Green or White putty. Thin it using either lacquer thinner or Testor's liquid cement, and just stipple it where you want it using a stiff brush. Since you're going to paint over it, it's the same thing really. And it smells a whole lot less. (Mr Surfacer REEKS!)

HEY ! Pressure wash or steam clean that engine ,BEFORE you work on it will ya ? He! He!That looks pretty good . Now keep going !        Tanker-Builder    P.S.   MODEL ON  ! !