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Seafoam Question #4572317
11/12/17 11:00 PM
11/12/17 11:00 PM
Joined: Feb 2008
Posts: 683
Atlanta, GA
RoGuE Offline OP
RoGuE  Offline OP
Joined: Feb 2008
Posts: 683
Atlanta, GA
I've had a bottle of Seafoam sitting around for a while and wanted to try it on my Malibu to see if it will help with some oil consumption and rough idle. It's not a lot but it's almost a quart down after 5000 miles, but it has never used any oil before. I'm planning on changing my oil very soon as well, so I figured I might put some in the oil as well before changing it. I've used Seafoam a couple times in other other cars. It helped in one case but not the other so it's worth a shot.

Anyway, I was planning on using the brake booster line like is usually directed, but on my car it seems like the brake booster vacuum line goes directly into one of the intake runners which isn't very helpful. There is another line that goes from the valve cover directly to a part right before the throttle body. I was wondering if this will work well to suck the Seafoam in to the intake.

This particular line is part of a non serviceable PCV valve (built in to the valve cover) and recently I have noticed that there is oil seeping around the end of the hose so I know there is probably some build up of oil in the intake. I just want to make sure this will work okay for what I'm planning to do. Here are a couple photos showing what I am referring to: https://imgur.com/a/aq7hs


2007 Chevrolet Malibu
2.2L Ecotec
Re: Seafoam Question [Re: RoGuE] #4572324
11/12/17 11:08 PM
11/12/17 11:08 PM
Joined: Dec 2016
Posts: 7,174
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,174
Waco, TX
Need to pour a little sea-foam into the "non-serviceable" PCV valve as well, while you are at it.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Seafoam Question [Re: RoGuE] #4572336
11/13/17 12:02 AM
11/13/17 12:02 AM
Joined: Dec 2011
Posts: 443
Connecticut 06033
oilmutt Offline
oilmutt  Offline
Joined: Dec 2011
Posts: 443
Connecticut 06033
I love how clean your engine looks,I try to keep our 05 6cyl Malibu the same way,i see you have me beat!


'05 Chevy Malibu 6cyl,119k, Syn. Oil (owned)
'16 Toyota Camry,4cyl 25k Syn oil (leased)
'92 Ford Tempo ,4cly 26k Conv oil (managed)
Re: Seafoam Question [Re: RoGuE] #4572415
11/13/17 06:25 AM
11/13/17 06:25 AM
Joined: Sep 2014
Posts: 1,490
Toronto Canada
WobblyElvis Offline
WobblyElvis  Offline
Joined: Sep 2014
Posts: 1,490
Toronto Canada
I have the same engine, oil consumption has increased from 1qt/8,000m at 100,000 miles to 1qt/2,800m at 196,000 miles. Seems to be the nature of the beast. Low tension rings maybe?

The line from the valve cover to intake is the line to use for seafoam. At idle, the engine should want to draw air into the valve cover if the PCV system is operating properly. You can feel this with your finger if you block the opening to the valve cover but don't do this for too long as you will create a vacuum in the crankcase and draw ambient air in around the engine seals. I don't think pouring seafoam into the valve cover port will really clean the PCV system as the seafoam will just mix with the oil in the top of the head.

Adding seafoam to the intake, via this valve cover line, would be the best way to "treat" the engine but this will set a trouble code as air/seafoam is entering the engine without passing the MAF sensor.

An overly dirty air filter can cause a higher than usual vacuum in the intake tube which will draw excess crankcase vapours into the engine from the valve cover area. You might want to check that first.

Re: Seafoam Question [Re: RoGuE] #4572427
11/13/17 06:59 AM
11/13/17 06:59 AM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
Put it in a spray bottle and spray it against the throttle plate with the RPM at 1500-2000. Clean the Throttle Body at the same time.


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Seafoam Question [Re: RoGuE] #4572523
11/13/17 08:51 AM
11/13/17 08:51 AM
Joined: Dec 2014
Posts: 509
MB - Manitoba
FastLane Offline
FastLane  Offline
Joined: Dec 2014
Posts: 509
MB - Manitoba
Your overly long oil changes is why your engines use oil. My FIL just parked a Malibu with 435,000 kms on it. Doesn’t use any oil. Oil changed every 3000 miles/5000 kms since new.


2010 Silverado 4.8 4x4 Mobil 1 5W30 ACDelco PF48E
2002 Mustang GT 4.6 Mobil 1 5W30 MC FL-820S
1966 Cessna 150 Phillips 20W50
2013 Mercury 30hp Mystic 25W40
Re: Seafoam Question [Re: RoGuE] #4572544
11/13/17 09:09 AM
11/13/17 09:09 AM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
My Santa Fe didn't use any oil when it died at 535,000km (300K miles) on 10,000km (6,000 mile) oil changes. I would have pushed the OCI further but the engine was really hard on oil so I couldn't.


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Seafoam Question [Re: RoGuE] #4572558
11/13/17 09:21 AM
11/13/17 09:21 AM
Joined: Sep 2014
Posts: 1,490
Toronto Canada
WobblyElvis Offline
WobblyElvis  Offline
Joined: Sep 2014
Posts: 1,490
Toronto Canada
Or, we could stay on topic. The use of Seafoam.

Last edited by WobblyElvis; 11/13/17 09:23 AM.
Re: Seafoam Question [Re: RoGuE] #4572569
11/13/17 09:29 AM
11/13/17 09:29 AM
Joined: Nov 2004
Posts: 7,806
Texas
GMBoy Online content
GMBoy  Online Content
Joined: Nov 2004
Posts: 7,806
Texas
I would run something stronger than Seafoam. Use Berrymans B12 Chemtool.

Re: Seafoam Question [Re: WobblyElvis] #4572581
11/13/17 09:38 AM
11/13/17 09:38 AM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
Originally Posted By: WobblyElvis
Or, we could stay on topic. The use of Seafoam.


It was pointed out that the OCI's were the problem and implied that Seafoam was not needed, I was pointing out that I don't think that is the case based on my experience. How is that "Off Topic" shrug


Last edited by StevieC; 11/13/17 09:53 AM.

'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Seafoam Question [Re: GMBoy] #4572585
11/13/17 09:45 AM
11/13/17 09:45 AM
Joined: Nov 2017
Posts: 6
Ct. Usa
Bigbill Offline
Bigbill  Offline
Joined: Nov 2017
Posts: 6
Ct. Usa
I put seafoam in the crankcase and gas tank at the same time. Seafoam is also a upper lube too. It lubes the valve guides, valve seats, frees and reseats stuck piston rings. By the time I need fuel again the idle has smoothed out, the idle is a higher rpm. The engine seems to be happy, happy, happy. My generator had a gummed up carb. I added seafoam tothe gas tank and forgot about it. Months later we fired it up and the carb was cleaned.

Re: Seafoam Question [Re: Bigbill] #4572613
11/13/17 10:22 AM
11/13/17 10:22 AM
Joined: Dec 2005
Posts: 10,326
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,326
Upper Midwest
Originally Posted By: Bigbill
I put seafoam in the crankcase and gas tank at the same time. Seafoam is also a upper lube too. It lubes the valve guides, valve seats, frees and reseats stuck piston rings. By the time I need fuel again the idle has smoothed out, the idle is a higher rpm. The engine seems to be happy, happy, happy. My generator had a gummed up carb. I added seafoam tothe gas tank and forgot about it. Months later we fired it up and the carb was cleaned.

Sounds like amazing stuff, makes you wonder how anyone gets by without it.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Seafoam Question [Re: kschachn] #4572736
11/13/17 11:53 AM
11/13/17 11:53 AM
Joined: Feb 2011
Posts: 6,769
Hudson, NH
LeakySeals Offline
LeakySeals  Offline
Joined: Feb 2011
Posts: 6,769
Hudson, NH
Originally Posted By: kschachn
Originally Posted By: Bigbill
I put seafoam in the crankcase and gas tank at the same time. Seafoam is also a upper lube too. It lubes the valve guides, valve seats, frees and reseats stuck piston rings. By the time I need fuel again the idle has smoothed out, the idle is a higher rpm. The engine seems to be happy, happy, happy. My generator had a gummed up carb. I added seafoam tothe gas tank and forgot about it. Months later we fired it up and the carb was cleaned.

Sounds like amazing stuff, makes you wonder how anyone gets by without it.

I use it in gas for non catalytic small engine applications like my snowblower and lawn mower. Thats what it was created for way back in 1932, a sick wet boat engine. Similar to a sta-bil. The other claimed applications, like fogging your auto engine's intake and catalyst with white clouds of pale oil are silly.


06 Escalade 6.0L LQ9 AWD 165k M1 0w40
03 Maxima 3.5L POS 152k ST HM 10w30
Re: Seafoam Question [Re: FastLane] #4572738
11/13/17 11:56 AM
11/13/17 11:56 AM
Joined: Feb 2008
Posts: 683
Atlanta, GA
RoGuE Offline OP
RoGuE  Offline OP
Joined: Feb 2008
Posts: 683
Atlanta, GA
Originally Posted By: oilmutt
I love how clean your engine looks,I try to keep our 05 6cyl Malibu the same way,i see you have me beat!

Haha, I could lie but I must admit these photos are from 2007 when I purchased the car. I do keep it very clean so it looks similar, only the coolant and brake fluid reservoir are a little yellowed.

Originally Posted By: WobblyElvis
I have the same engine, oil consumption has increased from 1qt/8,000m at 100,000 miles to 1qt/2,800m at 196,000 miles. Seems to be the nature of the beast. Low tension rings maybe?

The line from the valve cover to intake is the line to use for seafoam. At idle, the engine should want to draw air into the valve cover if the PCV system is operating properly. You can feel this with your finger if you block the opening to the valve cover but don't do this for too long as you will create a vacuum in the crankcase and draw ambient air in around the engine seals. I don't think pouring seafoam into the valve cover port will really clean the PCV system as the seafoam will just mix with the oil in the top of the head.

Adding seafoam to the intake, via this valve cover line, would be the best way to "treat" the engine but this will set a trouble code as air/seafoam is entering the engine without passing the MAF sensor.

An overly dirty air filter can cause a higher than usual vacuum in the intake tube which will draw excess crankcase vapours into the engine from the valve cover area. You might want to check that first.


The difference is I have only 54k miles on mine. It's never used any oil before until now. I changed it in January and shrug
I wouldn't expect the valve cover side to be drawing in air. Okay, I'll add it through this line into the intake. If it sets a code I have a scantool I can use to clear it.

The air filter shouldn't be dirty. I replaced it maybe a year ago and I don't really drive in dusty environments, but I'll give it a check.

Originally Posted By: StevieC
Put it in a spray bottle and spray it against the throttle plate with the RPM at 1500-2000. Clean the Throttle Body at the same time.


Maybe I'll spray down a little on the TB plate first and then run the rest through the line.

Originally Posted By: FastLane
Your overly long oil changes is why your engines use oil. My FIL just parked a Malibu with 435,000 kms on it. Doesn’t use any oil. Oil changed every 3000 miles/5000 kms since new.


I don't think you will find many on here including myself that thinks a 5k mile OCI is long, especially with Pennzoil Platinum in there. If I followed the GM OLM in the car it would take me to around 8k miles or more.


2007 Chevrolet Malibu
2.2L Ecotec
Re: Seafoam Question [Re: RoGuE] #4572757
11/13/17 12:13 PM
11/13/17 12:13 PM
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,312
ON, Canada eh?
Yeah that sounds fine...


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Page 1 of 2 1 2

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