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SUBARU UPPER ENGINE CLEANER DISADVANTAGES? #4484320
08/10/17 06:44 AM
08/10/17 06:44 AM
Joined: Jan 2014
Posts: 6
Australia
Colin01 Offline OP
Colin01  Offline OP
Joined: Jan 2014
Posts: 6
Australia
IM DOING A MAJOR SERVICE(FOR A FRIEND) ON A 2003 HYUNDAI ELANTRA WITH 1.8L ENGINE CAR HAS APPROX 100K (KILOMETERS) REASONABLY LOOKED AFTER. No obvious issues.

I WAS THINKING OF USING SUBARU UPPER ENGINE CLEANER TO CLEAN OUT COMBUSTION CHAMBERS, MANIFOLD,THROTTLE BODY. I DON'T WANT TO CAUSE ANY FURTHER ISSUES( Eg: damaged 02 sensor or clean up too good and cause oil consumption issues)

Is this stuff safe to use? Should i use or leave it?

Also, im planning on using a oil flush (Nulon). Is this stuff really needed

Thanks

Last edited by Colin01; 08/10/17 06:46 AM.
Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: Colin01] #4484325
08/10/17 06:48 AM
08/10/17 06:48 AM
Joined: Sep 2015
Posts: 979
PENNSYLVANIA
JeepWJ19 Offline
JeepWJ19  Offline
Joined: Sep 2015
Posts: 979
PENNSYLVANIA
I'm of the type that if it has no issues don't do anything to it.


2002 Jeep WJ 4.0 | Mobil 1 HM 5w30 |
TG8A | 2.5" lift | 148k miles

Software Engineer :]
Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: Colin01] #4484340
08/10/17 07:07 AM
08/10/17 07:07 AM
Joined: Nov 2006
Posts: 19,898
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,898
MA, Mittelfranken.de
The Subaru stuff is safe and a soak will help if you have pinging due to excessive carbon buildup otherwise it makes no sense to remove the protective layer of carbon from piston tops.
If there is no sludge or build up you don't need a flush either use a high quality with a decent calcium content to clean the internals. Just use a TB spray cleaner for the throttle body and a MAF specific cleaner or electronics cleaner (do not use carb cleaner) for the MAF sensor if it has one.


ASE L1, Master. Deutsch Meisterbrief.
Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: Trav] #4484351
08/10/17 07:19 AM
08/10/17 07:19 AM
Joined: Feb 2009
Posts: 1,578
wv
krismoriah72 Offline
krismoriah72  Offline
Joined: Feb 2009
Posts: 1,578
wv
Since you said "no obvious issues" and 'for a friend'... i wouldnt risk doing anything other than what it needs. If an issue arises down the road you will most likely be blamed and be on the hook for repairs. Perhaps things are different where you are than here in the US.

Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: Colin01] #4484357
08/10/17 07:27 AM
08/10/17 07:27 AM
Joined: Jul 2005
Posts: 30,416
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,416
NY
Unless there's a problem I wouldn't do anything, especially for a friend. If something happens after you'll be the guy that did it.


God Bless Our Troops

Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: Colin01] #4484398
08/10/17 08:21 AM
08/10/17 08:21 AM
Joined: Aug 2017
Posts: 534
Nebraska
BJD78 Offline
BJD78  Offline
Joined: Aug 2017
Posts: 534
Nebraska
My dad ( long ago deceased) used to always say" If it's not broken, then do not fix it until it is"

Use a top tier gasoline Many many brands (Shell, mobil, Exon, Conoco, Co Op, Cenex etc, which already has all of the additives and detergents needed to keep the fuel system and it's components in good shape.


2010 Forester:122K
2009 Sonata :189K
2010 Tucson:55K

OCI 5K using the cheapest dino oil I can buy,usually NAPA or TSC Travelers oil.
Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: BJD78] #4484570
08/10/17 10:58 AM
08/10/17 10:58 AM
Joined: Jan 2008
Posts: 10,662
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,662
OH
I was getting a fair amount of pinging in the 05 Matrix and did what Trav recommended in another thread. Run one interval of Techron Fuel System cleaner or Gumout Regane cleaner for one interval. I went with the Regane High Mileage cleaner since Techron was out of stock. Then follow up with an interval of B12 Chemtool. About $5 and $4 respectively at Walmart. Completely solved the pinging problem. Thank you Trav!

Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: SatinSilver] #4484585
08/10/17 11:13 AM
08/10/17 11:13 AM
Joined: Aug 2017
Posts: 534
Nebraska
BJD78 Offline
BJD78  Offline
Joined: Aug 2017
Posts: 534
Nebraska
I read somewhere a while back that Polyether Amine is a substituted Nitrogen molecule....in other words the chemical in Techron detergent, the same type of chemistry Shell puts in it gasoline for free. I suppose dumping in a bottle of Techron after filling up with a non top teir gasoline would suffice. Not sure if one is using a top teie gas and still dumping in a bottle of Techron or fuel cleaner would do much other that lighten the wallet.


2010 Forester:122K
2009 Sonata :189K
2010 Tucson:55K

OCI 5K using the cheapest dino oil I can buy,usually NAPA or TSC Travelers oil.
Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: krismoriah72] #4501093
08/29/17 09:03 AM
08/29/17 09:03 AM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
Boston, MA
Originally Posted By: krismoriah72
Since you said "no obvious issues" and 'for a friend'... i wouldnt risk doing anything other than what it needs. If an issue arises down the road you will most likely be blamed and be on the hook for repairs. Perhaps things are different where you are than here in the US.



I agree. The Upper engine cleaner isnt really needed unless it is something serious requiring it. To be honest I would stick with cleaning out the throttle body, MAF sensor, make sure the air filter is in good shape. Even throw in a fuel system cleaner if you want but for a friend I wouldn't go nuts. I am sure even just doing what I said would give your friend a good "butt dyno" feeling.


2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G
Re: SUBARU UPPER ENGINE CLEANER DISADVANTAGES? [Re: Colin01] #4501207
08/29/17 11:23 AM
08/29/17 11:23 AM
Joined: Jun 2015
Posts: 4,225
New England
Virtus_Probi Offline
Virtus_Probi  Offline
Joined: Jun 2015
Posts: 4,225
New England
My take is that the main application for this stuff is DI engines in which the intake valves are not washed by fuel and whatever cleaners might be present in it.

I have used Subaru Top Engine Cleaner as well as Subaru Carbon Clean using the associated cleaning tool, which screws into the bottle and plugs into a vacuum line via a cone-shaped attachment. I understand that the Australian product comes in a spray can, not sure what the reason for the different delivery method is?


2014 Forester XT, 86000 miles
Last Change;
M1 5W30 d1G2
Tokyo Roki 15208AA170 filter

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