Ring free

FlightPlanDan

Don'tTrustAfartAfter50
Last edited:
i put it in customers bikes
i ran one 2 miles after treatment then tore the top end off to inspect
it had started to softed up the carbon deposits on the valves
if it hadnt been raining id prob would have ridden the bike more and not needed the tear down
never had a reason to put it in my ski
 
Location
Texas
I have owned many outboards, and never used any additive, but my '05 Yamaha manual sd. to use it, so I did, at least during the warranty period. I noticed it kept the exhaust/prop area completely clean of carbon, so I guess it works. I don't really see any need for it in smaller 2 strokes tho, regular re-builds take care of any carbon issues. Seafoam is another similar product lots of boaters use.
 

BruceSki

Formerly Motoman25
Location
Long Island
i used it on my F115 yamaha 4 stroke outboard this season because it wasn't turning the RPM's it should have. i didn't even use the "shock treatment amount" of 2 oz per gallon and it went from only turning 5600 RPMS back to 6200 at top speed where it should be.

now i don't drive the boat at that RPM all the time but I noticed it wasn't right at the beginning of this season so i figured id give it a shot.


I do however do a ton of idling, and low speed canal rides with the boat so i think it built up carbon from not running hot enough or at high enough RPM.
My F115 also has a tendency to grow oil because of this as well.. these motors have been known to do that if they are idled a lot because they never get hot enough to fully seat the oil ring letting gas blow by into the oil.


Would it work on a ski? I don't see why not but with how often my skis get torn down and rebuilt I know it wouldn't do anything on my personal skis so I have never run it.


From an outboard perspective it definitely does work though. And damn you think there would be gold flakes in it for the price. I paid 37.00
 
Location
Texas
It was originally designed for 2 strokes, as 4 strokes I wouldn't think has much issue w/ carbon. Since the regular dosage is 1 ounce per 10 gallons, the ratio should not be affected, but a shock treatment might affect it.
 

Waternut

Customizing addict
Location
Macon, GA
Sounds like a really expensive snake oil. I don't have a big enough problem with carbon build up in my engines to worry about it but I've heard of countless positive reviews on Seafoam which is a whole lot cheaper and available at walmart or any other auto store.

The cheapest but most risky alternative is to trickle water into the engine while it's idling or run a cheapo headgasket with a slit in it so small amounts of cooling water are able to get into the cylinder to steam clean it. I don't know if the head gasket would have any affect on power valves though.
 

tor*p*do

Squarenose FTW
Site Supporter
Location
NW NC
I ran it in my SN for a few tanks
cleaned all the carbon off the pistons
and fouled two sets of plugs
with carbon chunks,, ran like crap
stopped using it, carbon came back, no worries
waste of time and money unless you build up tons of carbon
if I want to clean the carbon off the piston
just fatten the carb for a tank or two!
 
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