KnightDriveTV

I was getting some good lifter noise and/or slap. My perception was the motor was exhibiting a lot of slap, but I started to feel hesitation at times, making me think the lifters may have not been pumping up. I stethoscoped the car and it was definitely high in the engine, most pronounced when probing around the header flange. I'd considered pulling the heads and doing some lifters but I said the hell with it, I'm going to try this seafoam crap and see what happens.

First let me say, I didn't do the ingestion into the intake so it pukes smoke for days. I really don't feel its necessary considering the mileage and my intake is pretty clean. I did 6oz in the crankcase and 2oz/gallon in the gas tank (I ordinarily use techron, which works great for the gas gauge, but threw it in there). Well damn, let me report, after only 20min of running this thing, it sounds like a new motor. Looking forward to changing the oil here in about 100miles but...so far, I have to admit, if you want your LS sewing machine to sound a little quieter, throw 6oz in the motor and change your oil.

Disclaimer: I've built a lot of engines over the years, big forced induction builds, engine management tuning, owned a chassis dyno, etc. I was never one to advocate for additives or tank fillers...I think most of it is trash, much like the Slick50 debacle but...the Seafoam is a pretty straightforward petroleum based product...no biggie really, but it's cheap and frankly I didn't expect such immediate results. So, if you're in doubt or that cold startup noise and constant tick tick tick at the drive through, making your car sound like trash annoys you, maybe give it a shot.

that is all.

PS. Not trying to hear from the anti additive, beat a dead horse crowd. If you don't like it or want to use it, ok...click on.

jjc508520

Just this week I made a reminder to seafoam after the winter nap. I did the intake inlet deal right after purchasing it about 3y ago. ECS told me it had been "lugged in low gear" a lot and had carbon deposits that were leading to pinging (and they had to back the timing down). Advice - "Seafoam it and take it to the dragstrip!" On a followup visit I got my timing back and haven't foamed it since - will try intake + gas tank and later crankcase when I'm getting closer to my next change....

SLOWRYDE

Sounds like a cheap and easy general maintenance idea. I can't see how it would be anything but helpful to run 6oz in the crankcase 100 miles prior to your regular oil change every once in a while to clean up some gunk. Run it 100 miles, drain like your were planning anyways, refill & hammer on! Thanks for sharing your experiences.

El original

Thanks for sharing. Me an my wallet are not brave enough to try this fix (if there is a major engine failure afterwards) Cheers Bro.

WickedVetteLT4

Never been a fan of additives myself but I've used seafoam a couple times in the gas tank on different vehicles and I've has the same positive and timely results.

The Rabbi

105k miles on mine & it is a little noisy. I'll pay more attention now that I know there is a product to stop the noise.

Thanks for the tip

Whipitnow

I had a 7.3 Diesel that was tapping in the valve train and a local mechanic said throw some Sea Foam in the oil and if it does not quiet it down your going into the motor and I was like yaa right so I did and within like 200 miles or less it quieted it down alot and I was sold so now I bath in it...

BlackHellcat

LS1 is noisy. Just the way it is

jackthelad

OK, what's the difference between Seafoam and old fashioned flushing oil (which you can still buy)?

Many, many years ago, chucking a pint of kerosene in the engine and running it on a light load for a while was a standard method of "degunking" the innards of your engine prior to an oil change. But then, oil filters were invented.....

jackthelad

Should not be noisy at idle. At least, mine is not.

BLUE1972

It worked on the lawn mower , cleaned it up last spring ..

dood73

I've used it in a Dodge pickup with 250k+ miles and it did make a difference in both noise and responsiveness. I just haven't had the nerve to pour it into my 405hp sewing machine yet.

Josephu

Gas tank...yes. Motor....I dont think so Tim !

Marty 04

I put seafoam in everything I own, motorcycle to the lawnmower

dmaxx3500

we used to drain the eng oil and filter,then,,
add 5qts of tranny oil and a new filter,just let the car/truck idle for 1/2-1hr
drain and fill with fresh oil and filter

the detergent in the tranny oil flushed everything out

Whipitnow

I had a 55 Buick Super and I put Marv's Mystery oil in under the advice of the Auto parts store and what a mystery, the car blew up with'in 24 hours. Started smoking immediately got worse and then ate a piston or 2.

The old carbon build up was actually holding the engine together and there she blew when it was removed.... Ran great until I added the additive...

caddman11

Used Seafoam for years, swear by it. The first time I used it on my Supra, 110,000 miles the car almost stopped running. Ran it hard through the gears and the crap that came out amazed me.

Steven Anthony

When I was young me and a buddy of mine both had Miatas. I used seafoam in my car and it make made motor sound new like you're saying, I did the same thing to my buddies car and 3 days later a rod came thru the cylinder wall. Still till this day I wonder of the seafoam had anything to do with it

KnightDriveTV

I'm at about 125 miles since I put the 6oz in the engine oil. There is such a tremendous improvement in noise and responsiveness, I'm kind of bewildered....lol. The car only has 66k miles, has always had dead on schedule oil changes. I'm pretty surprised honestly. My gf commutes in her 2009 6spd C6 5 days a week and she jumped 1mpg after being a dead consistent 25.5-25.7, she's now mid to high 26's and says there are some mild hesitations gone as well.

I'm going to have to contribute all the results simply to lifters being inconsistent. I personally loved dohc solid roller engines with valve lash. Hydraulic lifters are trash but the V8 world seems to love them. I'd MUCH rather deal with valve lash intervals and lose no lift and have no instability, versus having to depend on a bunch of hydraulic lifters to deliver consistent valve opening events to 8 cylinders all running a shared fuel management system.

Just wanted to follow up.

rat123

If you use seaform in your oil do you have to do a oil change right away. I always use it in my boat gas