Welcome to the North American Subaru Impreza Owners Club Friday August 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Car Care & Detailing

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 06-15-2012, 08:50 AM   #1
John451
Scooby Newbie
 
Member#: 321966
Join Date: Jun 2012
Location: Sydneys South, Australia
Vehicle:
2012 Impreza 2.0i H
Black Pearl

Default 2012 Impreza - How best to clean aluminium engine corrosion ?

Have had my new 2012 Impreza for just 2 weeks and after checking my oil level found white corrosion spotting all over the aluminium block and its auxiliaries. I believe it's most likely due to my vehicle being the Air conditioned Show room car for the last 2 months so most likely superficial and it should have been cleaned up during detailing before sale.

Can anyone her tell me if this kind of corrosion is normal and what would be the best way to clean it ?


* Registered users of the site do not see these ads.
John451 is offline   Reply With Quote
Old 06-15-2012, 10:49 AM   #2
XERO287
Scooby Specialist
 
Member#: 253541
Join Date: Jul 2010
Chapter/Region: MAIC
Location: Silver Spring, MD
Vehicle:
2011 WRX 5DR Premium
OBP

Default

Break out the coke.
XERO287 is offline   Reply With Quote
Old 06-15-2012, 01:21 PM   #3
hella_sti
Scooby Specialist
 
Member#: 139289
Join Date: Jan 2007
Chapter/Region: MWSOC
Location: ND
Vehicle:
2003 WRX Wagon
PSM

Default

that won't hurt your engine at all
hella_sti is offline   Reply With Quote
Old 06-15-2012, 02:16 PM   #4
Not-EWRX
Scooby Specialist
 
Member#: 158043
Join Date: Aug 2007
Chapter/Region: RMIC
Location: SLC
Vehicle:
2013 Wrx Hatch
SWP

Default

The reason aluminum doesn't rust is because it develops a oxidized layer at it's surface.
Not-EWRX is offline   Reply With Quote
Old 06-23-2012, 11:35 PM   #5
BigVoxjammer
Scooby Newbie
 
Member#: 319171
Join Date: May 2012
Location: PortlanD
Vehicle:
2012 Impreza Spt Ltd
Sky-Blue/Gray

Default

Quote:
Originally Posted by XERO287 View Post
Break out the coke.


Oh, behave!
BigVoxjammer is offline   Reply With Quote
Old 06-24-2012, 12:25 AM   #6
John451
Scooby Newbie
 
Member#: 321966
Join Date: Jun 2012
Location: Sydneys South, Australia
Vehicle:
2012 Impreza 2.0i H
Black Pearl

Default

Has anyone else noticed this engine corrosion on their 2012 Impreza ?
John451 is offline   Reply With Quote
Old 06-24-2012, 11:29 PM   #7
Splinter888
Scooby Specialist
 
Member#: 215962
Join Date: Jul 2009
Chapter/Region: Tri-State
Location: Central Jersey
Vehicle:
2006 Wrx
SGM

Default

How many miles you got?
Splinter888 is offline   Reply With Quote
Old 06-25-2012, 04:13 PM   #8
Haunty
Scooby Newbie
 
Member#: 319378
Join Date: May 2012
Chapter/Region: MWSOC
Location: West Central MN
Vehicle:
2012 2.0i Sport Ltd.
Satin White Pearl

Default

I did notice that the surface of the aluminum has a cracked/peeling look to it and feels a little rough on mine. Doesn't look that bad yet at 3k miles.
Haunty is offline   Reply With Quote
Old 06-27-2012, 08:46 PM   #9
John451
Scooby Newbie
 
Member#: 321966
Join Date: Jun 2012
Location: Sydneys South, Australia
Vehicle:
2012 Impreza 2.0i H
Black Pearl

Default

Quote:
Originally Posted by Splinter888 View Post
How many miles you got?
Was how I picked it up new with approx 15 miles on it, the car had been sitting the last 2-3 months in the Dealers Airconditioned Showroom so suspected that is the cause.

Had requested the Dealers Service Dept clean it yesterday as it should have been as part of pre-delivery detailing, they just used their engine degreaser and it looks mostly better, the corroded areas are now mostly shiny grey patches which look similar to other imported aluminium engines I've owned in the past and now I know why.
John451 is offline   Reply With Quote
Old 06-30-2012, 01:11 AM   #10
dstroy
Scooby Specialist
 
Member#: 283711
Join Date: May 2011
Chapter/Region: NESIC
Location: Newport
Vehicle:
2012 STI sedan
Black with scratches

Default

Simple green, and a soft brush. I "wash" my engine bay twice a week usually. Spraying a bunch of water on it wont hurt it, I'm almost 13k miles into my '12 sti and it's fine. But to get rid of those little oxidation spots, use simple green and a soft brush.
dstroy is offline   Reply With Quote
Old 06-30-2012, 03:15 AM   #11
John451
Scooby Newbie
 
Member#: 321966
Join Date: Jun 2012
Location: Sydneys South, Australia
Vehicle:
2012 Impreza 2.0i H
Black Pearl

Default

Quote:
Originally Posted by dstroy View Post
Simple green, and a soft brush.
Thanks for the tip dstroy.
John451 is offline   Reply With Quote
Old 06-30-2012, 12:48 PM   #12
Kean
Scooby Guru
 
Member#: 25187
Join Date: Sep 2002
Location: So. CA
Vehicle:
'08 Foz Prem TGM
'10 Challenger R/T Blk

Default

....take a look at the following thread and pay particular attention to Ron Ketcham's responses. He is a retired chemist/expert in the industry and knows his stuff.

http://www.autopia.org/forum/car-det...s-how-2-a.html

Having said that, I would also try the APC + brush approach first (or maybe an aluminum safe metal polish + brush) to see how that works for you first. .....personally, Simple Green wouldn't be my first choice of APC's since it has the potential to actually accelerate the oxidation of aluminum. Their Pro HD and Aircraft products will not however. If you do use SG, I would recommend following the dilution recommendations/instructions.

NOTE: some of the acids mentioned in the link I provided (like HF) are particularly nasty in regard to your health. Always wear appropriate safety gear when working with products that contain components of this sort (ie. safety glasses, chemical resistant gloves, respirator, etc.). Always follow directions and researching the risks would also be a good idea.

-- sent from mobile phone--
Kean is offline   Reply With Quote
Old 07-01-2012, 01:38 PM   #13
John451
Scooby Newbie
 
Member#: 321966
Join Date: Jun 2012
Location: Sydneys South, Australia
Vehicle:
2012 Impreza 2.0i H
Black Pearl

Default

Quote:
Originally Posted by Kean View Post
.....personally, Simple Green wouldn't be my first choice of APC's since it has the potential to actually accelerate the oxidation of aluminum.
Thanks for the timely warning, did a google search and found the below warning from their FAQ page:


Aluminum - Is it safe to use Simple Green® on aluminum?

...However, caution and common sense must be used: aluminum is a soft metal that easily corrodes with unprotected exposure to water. The aqueous-base and alkalinity of Simple Green All-Purpose Cleaner can accelerate the corrosion process. Therefore, contact times for unprotected or unpainted aluminum surfaces should be kept as brief as the job will allow - never for more than 10 minutes. Large cleaning jobs should be conducted in smaller-area stages to achieve lower contact time. Rinsing after cleaning should always be extremely thorough - paying special attention to flush out cracks and crevices to remove all Simple Green® product residues. Unfinished, uncoated or unpainted aluminum cleaned with Simple Green products should receive some sort of protectant after cleaning to prevent oxidation.
John451 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to clean your engine bay engine parts???? turbobird14 Car Care & Detailing 39 12-25-2008 01:43 PM
What's the best way to clean the engine compartment under the hood? rabbit92x Car Care & Detailing 4 11-27-2008 09:06 PM
Best way to clean the engine bay cs11elonce Newbies & FAQs 3 11-01-2005 11:10 AM
Best way to clean an engine? wcbjr Factory 2.0L Turbo Powertrain 6 08-31-2003 10:41 PM
what is the best way to clean your engine?? waitandbleed92 Interior & Exterior Modification 1 07-20-2003 09:13 PM


All times are GMT -4. The time now is 06:24 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.