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Do dirty pistons really affect performance/economy #4657025
02/05/18 03:10 PM
02/05/18 03:10 PM
Joined: Feb 2016
Posts: 83
NM
tempnexus Offline OP
tempnexus  Offline OP
Joined: Feb 2016
Posts: 83
NM
Do dirty pistons really affect performance/economy or is it only a cosmetic issue? Like people who say that car runs better after a car wash or engine runs better after they rinse the top of the engine etc.

Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657031
02/05/18 03:14 PM
02/05/18 03:14 PM
Joined: Aug 2003
Posts: 12,898
NE,Ohio
Rand Offline
Rand  Offline
Joined: Aug 2003
Posts: 12,898
NE,Ohio
piston deposits (light) is mainly cosmetic IMO, heavy piston deposits can cause issues... such as preignition.excessive wear, stuck rings..etc


2019 Jeep Cherokee Trailhawk 2.0T
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657044
02/05/18 03:25 PM
02/05/18 03:25 PM
Joined: Mar 2017
Posts: 5,435
Soviet State of Washington
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,435
Soviet State of Washington
I think the answer here is eventually. Once piston deposits start and no action is taken to resolve or reverse them they continue to build and as mentioned already the result is stuck rings, hot spots etc.


2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter

Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657065
02/05/18 03:49 PM
02/05/18 03:49 PM
Joined: Dec 2017
Posts: 2,326
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,326
SE British Columbia, Canada
I think the worst thing to worry about is if you gum up the area underneath the rings, but the chances of that with modern synthetic oil is next to nil. I guess clean pistons can't hurt.


If you want the job done right......do it yourself.
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657066
02/05/18 03:50 PM
02/05/18 03:50 PM
Joined: Jun 2014
Posts: 1,773
Ca.
UncleDave Offline
UncleDave  Offline
Joined: Jun 2014
Posts: 1,773
Ca.
light crud on the skirt - cosmetic.

Crud anywhere in the rings - its real.

UD


Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657089
02/05/18 04:10 PM
02/05/18 04:10 PM
Joined: Jan 2009
Posts: 13,837
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,837
Illinois
Ring coking is a big problem. It causes the rings to seal shut, blow by, and high oil consumption that can lead to cat failure.


2007 Ford Fusion 232,000 miles
M1 0-20 EP
2017 Ford Fusion 55K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters

Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657125
02/05/18 04:31 PM
02/05/18 04:31 PM
Joined: Feb 2016
Posts: 83
NM
tempnexus Offline OP
tempnexus  Offline OP
Joined: Feb 2016
Posts: 83
NM
Thanks all.

Now the question is: Do any additives actually clean the pistons if the engine is direct injection like the Volvo Drive-E engines?

If not then how does one go about cleaning them? (pull the plugs, soak the piston in let say starter fluid ?)

Last edited by tempnexus; 02/05/18 04:32 PM.
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657140
02/05/18 04:44 PM
02/05/18 04:44 PM
Joined: Dec 2008
Posts: 2,407
CA
raytseng Offline
raytseng  Offline
Joined: Dec 2008
Posts: 2,407
CA
There is no logic in the direct injection as a problematic variable for an additive for piston cleaning. The additive will clean a DI piston the same as a regular fuel injection.

Did you mix this up with valve cleaning?

That being said any of the pea additives will work, I will recommend redline si1. You can youtube redline si1 reviee and a couple people have taken before and after borescope shots where it cleans. It is realistic as its not 100% clean but you see it working.
Finally if your system is already clean enough there is not going to be any difference in your vehicle behavior.

Last edited by raytseng; 02/05/18 04:47 PM.
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657153
02/05/18 04:56 PM
02/05/18 04:56 PM
Joined: Oct 2010
Posts: 5,283
Florida
Artem Offline
Artem  Offline
Joined: Oct 2010
Posts: 5,283
Florida
Well, if the piston top deposits build up to an extent where the engine's compression ratio becomes effected, that will certainly cause a performance change, wouldn't you say?

Deposit control is a MUST, in my opinion.


2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart. (thanks Advance Auto Parts for the awesome deal)
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657184
02/05/18 05:24 PM
02/05/18 05:24 PM
Joined: Sep 2004
Posts: 7,526
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,526
Marshfield , MA
Bestest way I know to control carbon build up is the funnest too. The Italian tune up grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Do dirty pistons really affect performance/economy [Re: andyd] #4657225
02/05/18 06:09 PM
02/05/18 06:09 PM
Joined: Dec 2016
Posts: 506
E. Tennessee
WhizkidTN Offline
WhizkidTN  Offline
Joined: Dec 2016
Posts: 506
E. Tennessee
Originally Posted By: andyd
Bestest way I know to control carbon build up is the funnest too. The Italian tune up grin2


Absolutely! I do a combo effect of dosing with Redline SI-1 while doing it. Fun and healing at the same time (done safely of course).


His: '12 Kia Optima SX - 2.0L GDI Twin-Scroll Turbo [Tuned] (74K)
>EDGE 0W-40, Fram XG9688
Her's: '14 Nissan Rogue SL AWD - 2.5L NA (70K)
>EDGE 0W-20, Fram XG6607
Re: Do dirty pistons really affect performance/economy [Re: WhizkidTN] #4657273
02/05/18 06:56 PM
02/05/18 06:56 PM
Joined: Feb 2009
Posts: 1,578
wv
krismoriah72 Offline
krismoriah72  Offline
Joined: Feb 2009
Posts: 1,578
wv
There are many youtube videos of guys cleaning piston tops and combustion chambers with various products, they have proof of good/bad with boroscopes.

I havent seen a water mist video yet perhaps there isnt one..but water as far as i know cleans combustion chambers the best.

Does it matter one way or another? No proof of performance or economy that i have ever seen.

There are lots of engines that make it way past 200-400K miles with nothing done but routine maintanance.


IMHO most of the ring coking and blowby issues are due to manufacturing defects using poor designs or bad products..

Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657349
02/05/18 08:19 PM
02/05/18 08:19 PM
Joined: Jun 2003
Posts: 33,077
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,077
ME
I've done MMO/ Seafoam/ Water mist cleans of old saturn s-series.

They burn oil and the coke from that leads to preignition/ knocking, which leads to ignition retard, and flat spots/ terrible performance.

All three methods clean great. So does running a 15w40 oil.

Re: Do dirty pistons really affect performance/economy [Re: eljefino] #4657368
02/05/18 08:32 PM
02/05/18 08:32 PM
Joined: May 2010
Posts: 9,047
North Carolina
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,047
North Carolina
Originally Posted By: eljefino
I've done MMO/ Seafoam/ Water mist cleans of old saturn s-series.

They burn oil and the coke from that leads to preignition/ knocking, which leads to ignition retard, and flat spots/ terrible performance.

All three methods clean great. So does running a 15w40 oil.


Same thing in my saturns, I used berryman b-12 1/2 can every 3rd tank, and rev it good when hot.


13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: Do dirty pistons really affect performance/economy [Re: tempnexus] #4657407
02/05/18 09:21 PM
02/05/18 09:21 PM
Joined: Aug 2012
Posts: 2,178
Oregon
MrQuackers Offline
MrQuackers  Offline
Joined: Aug 2012
Posts: 2,178
Oregon
That sc1 has been at 185k for a long time now.


Master the 1000 yard stare

coffeeMobil 1 USA
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