Astur

https://www.slashgear.com/1549157/wh...=msnsyndicated

Just read this article that makes a pretty strong case for this product, specially for those with of us that have Direct Injection fuel delivery (997.2).

Now and then I've also read posts from forum members that seem to exalt some of the attributes of this product addresses. Hence, I'd be curious to hear some real pros/cons from those that have used this treatment and specially the carbon removal on intake valves that seems to be attributed to DI engines.

ATX_Native

I have yet to see a pattern of valves needing to be cleaned at any regular interval.

cgfen

no value IMO if you just add to oil or fuel.
might work if you add directly to intake downstream of MAF.
but unlikely since carbon deposits typically need mechanical "scrubbing" to be removed.
I just tried this on an Audi to try and ameliorate an oil burn issue.
Too soon to tell

If you want to clean your intake ports / valve stems, try walnut shell blasting.

CAVU

OP,

Attached is a 2010 copy of Seafoam's Motor Treatment. The three ingredients are spelled out. If you look at a 2021 MSDS, Seafoam is claiming trade secret for two of the three ingredients. My guess is they have not changed the three main ingredients, maybe just the ratios.

Nothing new in there. Before the federal government legislated detergents in fuel (EPA followed with requiring it in 1995), I suspect that the retail treatments, Techron and Chevron fuel were my go to in the late 80s through to late 90's, that had detergent or detergent-like contents were effective. IMHO, if you are using a TOP Tier fuel, performing regular maintenance, then the fuel treatments are not needed.

groovzilla

I have been using Seafoam in the fuel of my gas powered Outboard boat - It came highly recommended.
Great prices at Walmart.

Petza914

I use it in fuel as lubricant for the mechanical fuel distributor in my CIS 928 as a fuel stabilizer and injector and carb cleaner in other cars and motorcycles, and adding 1 oz/qt to the motor oil of a 928, I was avle tingree.a stuck lifter. I normally use Driven Carb Defender as my stabilizer and ethanol equalizer, but when I can't find that, I also use seafoam.

ADias

I used StaBil 360 every other gas tank or so but a year ago switched to LM DI-Jectron; one can every 2400 miles.

Tj40

So I used to have a boat with an old Chrysler outboard engine, you could pull the spark plugs and see the pistons were covered in black carbon deposits.

I gave it the aerosol seafoam treatment - spraying directly into the throttle body, it worked pretty well afterwards the pistons looked mostly clean and shiny - apart from one, that’s how I learnt I had a misfire in one cylinder :-(

So, yes it can work as advertised - whether that does any good in our cars running fuel with detergents added is a different question……