yea just checked my bottle

 

not sure if it is the case here or not, but just because something is non-toxic in one state does not mean that it is non-toxic in another state. When you add anything to the equation (in this case heat) you can reach the tipping point where you have put enough energy into the system to start a reaction. The molecules in the chemical can both come apart and recombine into other molecules (which can be dangerous) and they can react with the molecules in the air to make other molecules (which again can be dangerous). College chemistry rears its head...
that said I wash my engine bay. I stay away from pressure washing because I don't want to force water into a million little places to sit and start rust. I also stay away from electrical stuff where possible to minimize the risk of short...my 2 cents is up.

 

i can't believe this thread is still going LOL

 

Also, try to keep water out of your alternator and I always let it sit in the sun for a few hours to dry before starting up

 

I paint 28mm WWII models and uase simple green as a paint stripper. Also, it will melt plastic models (found that one out the hard way)

Yes I realize that automotive plastics are of a much higher quality than hobby plastics, however I dont want to.

So no, I wont put that in my engine bay. And the smell is aweful! Dont want that smell in the cabin on the ride home from the detail bay.

 

possibly we should google this one

if you care
cool or very slight warm engine
brush or blow off the dust and large chunks of dirt
cover the intake, coils, alternator and aftermarket electronics that may not be sealed
P21S Total Auto Wash or some related degreaser to remove grim
clean rags and brushes
rinse low pressure hose or steam, not a power washer
remove water from spark plug wells with a dry sponge
wax painted metal

if your want it sort of clean right now
blow off dirt and chunks with the air compressor, wear goggles
wipe engine with a rag sprayed with wd-40
let wd-40 dry before starting

http://www.properautocare.com/howdoiclandd.html
http://www.pelicanparts.com/bmw/tech...s_corner-7.htm

/wd-40, duck tape, baling wire and a fire striker, more than enough to take over the world

 

Every winter, I spray WD40 all over the engine and engine bay. Every spring, I spray Simple Green all over the engine and engine bay. Let it sit for about 1 min. Hose the engine and bay. I don't cover a thing.
I can fire the engine up when I'm finished with no misfiring, or any problems for that matter.

 

I've pressure washed my engine bay on every single one of my cars for YEARS!, The key thing is to have the car running as you wash it down. Works without any problems

 

I do it with the engine cold so the Simple Green doesn't dry up on the hot/warm parts.
Plus I didn't want to hit the hot cast iron manifold with cold water. But, if you guys are doing it with no problems, kudos.

 

hose + 4G63 = bad ju ju

 

IT will be fine i do mine every once and a while i just cover up the areas where wires are and simple green works wonders! And dont go spray happy just wet a litte bit spray on cleaner get a scurb brush and spray lightly off... Usually than i get a towel and dry up as much as i can than start my car and let it run till it is hot and than turn it off and leave it alone for awhile so all the mosture evaporates, than i spray on some protectant and let it bling

 

Haha where does this come from Is that a fact cause I use simple green to clean my rims cause it's not as harsh as wheel cleaner and wont strip the clear coat on the wheels or brake caliper. I have used Simple Green in my engine bays for over 10yrs and no problem with it any of my cars. There is a extra strenght version maybe you mean that?

 

I wash the engine/engine bay on all my vehicles a few times a year; I've been doing this for 20+ yrs and never had a problem- but I do use a bit of common sense. I just use dish soap and a hose, engine not running and cool. I cover the engine with an old towel and wash the bottom of the hood first, then do the engine and engine bay. When I'm done I blow everything off with compressed air, then take it for a drive. Use common sense- don't spray anything full blast, try to not put too much water on electrical devices, etc. While I will agree that this is somewhat asking for trouble it's nice to have a clean engine to work on; if you do it a few times a year it doesn't take too long.

 

Any detailer worth their salt knows you can clean engine bays if you are smart about it. On my EVO I wash the engine the same way I wash the car exterior. I have used diluted simple green without ANY problems, but I really love using S100. Obviously you dont want to force water under the coil cover, into the air filter, or any of the electronics. Nothing looks worse than a nice car on the exterior with a grease ball under the hood. Anyways just my $0.02

 

Same goes for me. I pressure wash about twice a year. Never ever had an issue.