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Old 06-21-2011, 11:17 PM   #1
xluben
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Default Simple Green Engine Bay Cleanup (Non-Subaru Content)

I "detailed" my engine bay tonight. Basically just followed what thousands of other people have done and posted online:
  • Started with a cool/slightly warm engine (should be able to touch it)
  • Low pressure rinse to moisten everything (garden hose on an extremely low setting)
  • Sprayed on Simple Green liberally (I did not dilute it at all)
  • Let sit for a few minutes
  • Lightly scrubbed with a long bristle, soft brush (general scrub only, not necessary on a relatively clean engine bay)
  • Rinsed off with water (garden hose, again on low setting)
  • Wiped dry with a towel
I did not cover anything. I tried to avoid spraying water directly onto electricals and the cone filter, but everything got wet to a point, and no problems were encountered. According to the time stamp on my photos, the entire process (including taking photos) took 16 minutes. Very quick and easy, and I am happy with the results.

I did my WRX first, but I did not take any photos. It wasn't that dirty to begin with, so the change wasn't that drastic (but it really did come out looking like new afterwards). I did my wife's 07 Civic next. It has never had the engine bay cleaned. Not perfect after, but still looking very god. Before/after photos below:

















I did not put any finisher on the plastics to keep them shiny. I did take the photos when they were still moist, so I'm sure they'll look a lot more dull once they're completely dry, but I'm not really concerned with that. Looks nearly as good as new and the engine bay has only had one cleaning in 4 years!
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Last edited by xluben; 05-30-2013 at 11:27 PM.
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Old 06-22-2011, 01:40 PM   #2
seekndestroy19
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nice. im so tempted to do this next wash but dont want corrosion or water getting inside electrical connectors
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Old 06-22-2011, 01:58 PM   #3
The Duke
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Quote:
Originally Posted by seekndestroy19 View Post
nice. im so tempted to do this next wash but dont want corrosion or water getting inside electrical connectors


You drive your car in the rain...
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Old 06-22-2011, 02:10 PM   #4
besthaticouldo
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wow. those are pretty stunning results. looks great.
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Old 06-22-2011, 02:26 PM   #5
NcKidd
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Originally Posted by besthaticouldo View Post
wow. those are pretty stunning results. looks great.
+1, will be doing.
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Old 06-22-2011, 02:28 PM   #6
rmj
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I also should look into this! Nice work!
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Old 06-22-2011, 04:13 PM   #7
seekndestroy19
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You drive your car in the rain...
thanks i never thought of that....i was referring to spraying water straight on the motor
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Old 06-22-2011, 04:36 PM   #8
STiwestMA
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wow man, thats awesome! it made such a noticeable change
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Old 06-22-2011, 04:50 PM   #9
silver03bugeye
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doesnt simple green eat aluminum? Ive heard that somewhere just cant remember if it was bs. I think there was something on the bottle says "not for use on aluminum"? just wondering
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Old 06-22-2011, 05:09 PM   #10
SatinWhitePearl
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^

You're correct, Simple Green does "dull" aluminum. It's not a problem though, just use some metal polish and you're good again.

I've been using Simple Green, automotive blend, to clean engine bays for a long time.

I also use it to clean wheels, wheel wells, undercarriage, etc. and it works flawlessly.
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Old 06-27-2011, 07:48 AM   #11
Boug
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Wow! I agree as Simple Green is the Army's solution to cleaning nearly everything.
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Old 06-27-2011, 08:36 AM   #12
TheNewThatGuy
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Simple Green is corrosive. If it's not on the bottle, I know I've seen it in an MSDS in my shop. No lie. Also, it's a terrible cleaner. At everything.
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Old 06-27-2011, 11:41 AM   #13
SatinWhitePearl
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^

Any more optimistic recommendations?
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Old 06-28-2011, 12:44 AM   #14
pete@bms
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I have used Eagle 1 A2Z wheel and tire cleaner with very good results but I've never tried simple green I'll probably look into it my outbacks engine bay looks terrible
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Old 06-28-2011, 12:57 AM   #15
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Quote:
Originally Posted by TheNewThatGuy View Post
Simple Green is corrosive. If it's not on the bottle, I know I've seen it in an MSDS in my shop. No lie. Also, it's a terrible cleaner. At everything.
so is water if you let it sit on something long enough.

i've been using simple green in the family machine shop for ten years now and none of our machines or equipment show signs of any corrosion after using simple green.

i've also used it on my engine bay as well, many many times, and have loved the results.

if you can't get dry some of the tighter spots i recommend using a compressor and blowing the water from the crevices.
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Old 06-28-2011, 09:44 AM   #16
TheNewThatGuy
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Agreed. Not saying it's extremely corrosive. Just saying it is. I can't use to clean the aircraft wheels I work on. Plus every time I've used it, in various applications, I've never been impressed. None of my "optimistic recommendations" would be off the shelf consumer products. : /
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Old 06-29-2011, 09:23 AM   #17
LetItSnow
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Quote:
Originally Posted by seekndestroy19 View Post
thanks i never thought of that....i was referring to spraying water straight on the motor
Well, I drive this car in the rain:


That's a 22x18 hole in the hood. Even in a good downpour, it doesn't seem to care.

Last edited by LetItSnow; 06-29-2011 at 09:45 AM.
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Old 07-02-2011, 12:23 PM   #18
Gazeebo
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lol nice... I think if it mattered terribly all the OBS's and cars with fake hoodscoops would have stopped running long ago. and there's a reason the engine bay is set up for proper drainage.
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