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Assuming you mean the outside. Warm the engine up a little bit. Spray with a product called Simple Green. While the Simple Green is on there, use a big, soft, fluffy brush -- the kind you use to clean billet wheels -- to break stuff loose. When done, rise with a garden sprayer. To finish the job right, go ahead and wash the entire car just to make sure you get any overspray.
 

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I hate to contradict but don't use simple green its not good to aluminum, look around and you will see posts about it etching aluminum wheels, seeing how our block and heads are aluminum... otherwise I dunno...
 

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I have used Simple green on many things, including aluminum with no harm. I would think if it is left on it could possibly cause a problem, but using the method described, I would doubt it would cause problems. It just wouldn't be on the metal long enough. You make me wonder though... I'll try it on a scrap piece of aluminum and let it sit. Proof is in the pudding.
 

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anmracing said:
Good tips on the engine wash.

BTW, B_A_Betterperson,

Hows the dead peddle workin' out? Does it ever mess you up if your shifting fast????

Just wonderin'
It is fantastic. Never gets in the way. Have it positioned at the same height and depth of the gas pedal. Not only helps hold you in place during cornering -- it makes long drives a lot more comfortable as well. Rock solid, too. Thanks for asking!
 

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DFWGTO said:
I hate to contradict but don't use simple green its not good to aluminum, look around and you will see posts about it etching aluminum wheels, seeing how our block and heads are aluminum... otherwise I dunno...
No problem. Always good to make people aware so they can make their own informed decision.

Have heard rumors about this, but when used correctly there should not be a problem.

I'm positive that in the instances where damage has occured, someone has either sprayed the product directly onto a red hot surface, incorrectly rinsed, or let the product on far too long. Even hard water can do this.

Speaking of hard water, filling your garden sprayer with distilled water will allow for spot free evaporation.
 

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i like to use about 70/30 or so mix of vinager and water works really grate just spray on and brush, rinse and you don't end up with that white corrision on everything, really the best i found
 

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the cheapest way that i do mine is wipe it down with damp cloth ever week or ever wash. its FREE:cheers i have 24400 miles on mine and looks brand new. now if you have blown gaskets that sprayed oil,coolant,etc, than go with the grease ligthing. just my .02. go for the free stuff and you dont have to worry about dirty engine bay. take a look at my photo. and i also have my hood plugs off 24/7


 

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On the C6, I do what EEZ does, except I use simple green on some pieces. At least once a month I clean everything, wheel wells, the engine, the underbody, suspension etc. I have a lift so it's fairly easy. On other cars I have owned, B.L. (before lift), I did the same as BA. I've never had a problem with simple green. I've used it on many aluminum pieces. I think the problem is when you use it on a hot surface, or on clear coated wheels.
 

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Been hearing that Simple Green can etch aluminum and shouldn't be used on the LS1 or LS2 because of their blocks.

Instead of using the product straight next time, I'll probably cut it down with distilled water somewhat. Maybe a 60/40 or 70/30 ratio.

I just don't think that a quick application and rinse, where the solution is on the engine for less than 5 minutes, is going to hurt anything. Then again, if it does, I'll be sure to let everybody know by whining as loudly as possible.
 

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I almost never clean my engine...I remember waiting for my company car to get washed a few years ago and some poor guy was watching the guys at the wash who were unable to start his car after they washed the engine bay, they tried for 45 minutes...
 

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Man, you guys are killing me! :willy: . I hit the local car wash, pull in the self wash bay and fire up the power spray. I little soap, a little rinse and a touch of spot free rinse and whalah!! super clean engine/bay. Cheapest way in my book....but to each his own. :cheers
 

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I've always used soap and water, or Simple Green when I see evidence of any oil film. The only problem with Simple Green that I recently noticed was, it discolored the magnesium valve covers on my other car. I'm not sure if I was at full concentration or 50/50 with water.
 
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