Sorry to hijack this thread, but this is ridiculous.
Seafoam is just like any other oil supplement/treatment/fuel treatment/engine flush. It's made of petroleum distillates, just like Marvel's Mystery Oil, B&G, Lucas Oil, and the like. You can make your vehicle run better putting anything through the fuel and crankcase...I once used a bottle of ATF in the fuel tank of my Mustang, and the guy was right..it was the best stuff to clean off valve deposits. It smoothed my idle and improved my gas mileage. I think if you put a bottle of Aunt Jemima through your system it would probably do the same.
If you're gonna do it, do it right and get hold of a pressurized "weed sprayer", use a can of aggressive fuel system treatment, mix it with fuel according to the directions, disable the fuel pump, and run the engine off of the mixture. Nothing...I mean NOTHING cleans fuel injectors better! The difference on a 100k mile engine will startle you.
As for the crankcase, just use the engine flush (really just a can of diesel for $2.99) at your parts store and follow the directions. Your engine won't smoke, although it will not be happy while you run it with the flush in there. It's all voodoo guys.

 

How is it "ridiculous" and "all voodoo" if it's cleaning off deposits?

I don't think that any of us are claiming that it's anything more than something to get the grime off of the valves and pistons, and blow out injectors. I'm not.

We're all saying what you said... run a can through the intake and dump another into the crankcase to get the engine to run smoother/better.


Doubtful. given that pancake syrup doesn't have the petrolium distillates in it, I doubt it woudl have the same effect. In fact, the sugar would actually gum things up.

 

The same thing was a popular cleaning method using ATF fluid on DSMs (Eclipses,Talons,Lasers) and it all works.

I just used Seafoam with the urging of a friend who helped me and I'm sure I got some cleaning in the engine done but no noticeable effects on gas mileage or idle.

I don't think I'd go through the hassle of doing it again since my yearly regimen of using BG's 44K once a year is probably taking care of things just fine.

 

Yeah, sorry guys, I got a little rude there. That pancake syrup comment was uncalled for and highly illegitimate. And completely, absurdly hilarious. If I'd have commented about Log Cabin maple syrup, you know, it wouldn't have been as comical, because the bottle isn't shaped like a chick.
I was amazed at how specific the procedure was. It just sounds like shadetree mechanics to me; buy a bunch of 'wonder oil' and pour it into every hole the vehicle has, ignore the smoke, then drive like a demon all over town before changing your oil. It sounds like a decathlon of ridiculousness. But hey, you can't argue with results!

 

1998 4runner 3.4
PVC
1/3 in the intake two seperate times
5 minutes but next time ill wait about 30-40

IT ran smoother and had better throttle responce.
This stuff rocks!

 

Model and Year: '90 4runner 3.0
PCV or Brake Booster line? Neither, I used a smaller vacuume line. I'll try brake booster next time.
Amount used: 1/3 can first and second time in intake, remainder 1/3 can in fuel tank
Location used: Intake, fuel tank
Amount of time sitting: 15 minutes first time, 3 hours second time.
Duration and description of smoke: Not as heavy as I thought it would be, but heavy enough to smoke out my neighbor that was sitting on his porch.
Gas Mileage: Haven't figure it yet. To many variables, I'll have to wait before my next road trip.
Other notes: Engine runs much quiter. I can now hear the intake at 4000 RPMs. Haven't noticed much of a power increase though. I plan on putting in another can soon. Good stuff.

 

Model and Year? 1985 4runner 22re

PCV or Brake Booster Line for Intake? brake booster

Amount of Seafoam Used: 2/3 can several times

Location(s)- Intake, Crankcase, or Gas tank - Intake

Amount of time it sat before restart: first time 20 minutes, second over night

Duration and desciption of smoke: first time lots of smoke for 5 minutes, made my neighbors mad. second time smoked for a good 20 minutes, made my neighborhood VERY foggy for a while. VERY thick when left over night

Following Gas mileage experience: havent checked, its hard not having a trip meter

Other relevant notes: 248k miles, runs better every time i seafoam it

 

Model and Year? 1996 4Runner 3.4

PCV or Brake Booster Line for Intake? brake booster

Amount of Seafoam Used: 4 cans

Location(s)- Intake, Crankcase, or Gas tank - Intake, gas tank

Amount of time it sat before restart: first time 20 minutes, second over night

Duration and desciption of smoke: first time lots of smoke for 10 minutes, overnight very thick for about 10 min, fogged out the neighborhood

Following Gas mileage experience: haven't even been through a tank of gas
Other relevant notes: 190k miles, smoother idle, valve tapping has stopped

 

Model and Year?

1990 4Runner 3VZE

PCV or Brake Booster Line for Intake?

No

Amount of Seafoam Used:

2 cans, 1 each fill up

Location(s)- Intake, Crankcase, or Gas tank

Gas tank

Amount of time it sat before restart:

Several hours, each startup was on a cold motor.

Duration and desciption of smoke:

Small amount, nothing exceptional

Following Gas mileage experience:

Figures are based around a 14-gallon fillup, IE, the light was on when I filled it up. The MPG numbers are from Corey's MPG calculator.

Baseline: 190 miles from full tank, 13.57 mpg
1st Full tank with SF: 210, 15 mpg
2nd Full Tank with SF: 229, 16.35 mpg

This is, by the way, a mix of about 25% city driving and 75% highway. I will be headed on a nearly 200 mile trip this weekend so I can tell you more accurate numbers for the highway then.

Other relevant notes:

Oil change done immediately after tank was filled with 2nd can of Seafoam... 5w30 Pennzoil

I did a Jiffy Lube change the other day since I still can't work on the truck, and didn't wanna waste my Amsoil on the Seafoam in the oil. At my next convenience (about a month or so), I will change the oil to Amsoil synthetic and prior to that, run an intake and oil system cycle with the seafoam. But still, nearly 3 MPG is a HUGE difference from something that cost me $10. After the first Amsoil run of 5K miles, I will seafoam it once more, and then switch to 10K mile amsoil intervals. So far, so good!

 

94 runner 3.0 auto 113,000 miles

used in the tank a couple of times a year on long trips and noticed
a big improvement, last summer on a six hour trip w/ the family (2 adults, 2 children, dog and a rabbit + all our gear for a weeks vacation. i got 17 mpg
up and back. normally i get 16 mpg. with mixed driving mostly around town.
Saturday i finally decided to pour it through the brake boost, 1/3 of a can, smoked a little while pouring it in. shut of motor and left for an 1 1/2 hours, when i started up there was a massive smoke screen couldn't see the cars in my rear view mirror. next day poured in the remaining can into the tank and filled it up, it runns so smooth now, didn't notice any increase in pickup and will not have results on milage for a few days.

got to change the oil soon

Woody

 

did yours look like this? mine did
http://videos.streetfire.net/categor...4D46796CCD.htm

 

Yeup... that looks familiar!

 

Make/Model: 92 4Runner, 3.0, 5spd

In via Brake Booster

Amount used: 2 cans: 3/4 in intake, 3/4 in gas tank(3/8 tank), 1/2 in crankcase

Time to let sit: 5-10min

Smoke: started smoking amost as soon as I started pouring it into the vacuum line. Poured it in, shut it off, poured it into the tank and crank case. Lots of smoke, fairley heavy (glad I did it outside), let it idle at about 2500RPM for about 10min, and smoke was still going strong. Took it out for a boot, and took probably another 7-8min before the smoking stopped.

Gas milage: havn't put enough miles on to notice yet, but considering I also just uped to 33's...can't really comment.

Other: idle seems to have smoothed out, and the throttle responce was a bit nicer today.

 

1993 Toyota 4x4 3vz SR5 Ext Cab 5 spd 233,000 miles
In via vacuum hose on throttle body
1/3rd can in vaccum hose, 2/3 in half tank of gas 1/3 in crankcase
Let sit 5-10 min, second treatment overnight
Lots of smoke first time out...Second treatment significantly less
Dont know if i get better gas mileage yet, but car runs significantly smoother, almost thought engine was off.....

 

Model and Year? 1994 Xtracab 4x4 3VZE 202,000 miles

PCV or Brake Booster Line for Intake? PCV (brake booster is TOO BIG! I was afraid I'd blow a HG or bend a connecting rod!)

Amount of Seafoam Used: 1 can

Location(s)- Intake, Crankcase, or Gas tank: 1/3 in intake, 2/3 in gas tank

Amount of time it sat before restart: None.

Duration and desciption of smoke: < 1 minute; light smoke.

Following Gas mileage experience: Not checked yet.

Other relevant notes: Next day noticed a considerable increase in the response of the engine. It is more eager/happier to pull to upper rpms than before. Seems like a different engine!

 

I went to my local NAPA auto parts store and bought two cans of Seafoam.

I asked the guy at the counter if he had ever run Seafoam through the PVC valve. He hesitantly said, "uh...... yeah."

I asked what that meant, he said that he had run Seafoam through the PVC valve and that it cleaned out lots of crap from the intake plenum. It also DESTROYED the catalytic converter $$. In his words, "hey all that crud has gotta go somewhere."

No thanks.

 

OK I'm a newb when it comes to PCV valves and brake booster lines. I was going to do a treatment a couple weeks ago, but couldn't figure out which lines these were, and how I would get the SeaFoam into them? Can someone give me a step by step, and which lines to look for?

Rob

 

Has anyone who had pinging problems prior to the treatment had them lessen or go away all together afterward? I haven't seen any comments in this thread or the long 450+ post thread regarding pinging. Looking for a solution in my '97 with 147k.

Thanks!

 

model 1989 4runner 3.0 v6
amount 3/4 can through brake booster i disconnected it at the motor end, and added a line for it to suck it through.
let it set for 20 min then restarted smoked a little then became harder.drove it about 3 miles and back along the way let run at 4000 rpms for a short distance.

(side note, it did not stall out i had to shut it off, it did not want to stall out)

first part of drive i thought i was james bond in a car chase with a smoke screen.

what i have noticed so far tach before was running 1100rpms now 900rpms.
will i use it again YES if not just for the laughs.
in a few days i will run another can in the crankcase and one in the gas and one more through the motor to see if it smokes as much 2nd time around.
then do a oil change.

 

Yeah what he said, I would like to try it also!