In the past month, due to weather, I ran about 5 ounces of Seafoam through my 88" Twinkie. Ran the tank pretty well dry, put in about 5 ounces of Seafoam (maybe a little more), filled up, ran it for a day or so (1 day gets 80 miles, but this time got about 120), had to let it set for about 3 weeks, and I ran it pretty far yesterday (had about 180 on the odometer when I filled up). I'm pretty sure the gas mileage somewhat recovered, because I used to have to flip to reserve at about 170, but I was at 180 when I stopped for gas and only put in 4.5 gallons (like when I first got the bike).

The bike idles much smoother now, doesn't seem to hack and cough as much in the cold either. There's close to 50K on the clock, and to my knowledge this is the first blast of any type of cleaner that's been through it. I've still got about 2/3 of a can of Seafoam and I was curious if some of you guys would put that in a spray bottle and shoot it into the intake to clean the valves, put it in the tank again, or just run it through my wife's car (her Caddy has 50K on it and seems kind of sluggish as well).

Some friends had suggest I also change the spark plugs after running the Seafoam through, but since it's so close to a service interval, I figured I'd let the shop do it.

 

Seafoam is your friend

 

I pull the air cleaner off mine once a year and spray SeaFoam in thru the intake. Hasn't hurt anything and I just rolled 57000 miles, ( bought it with 4000 on it.) Seems to run better after and I change the plugs at 10000 mile intervals regardless of when I run SeaFoam thru the intake or in the gas tank.

 

I would put it in your car. Use it when the bike is going to be parked for a while to stabilize your gas. Using it a couple of times a year is sufficient to keep fuel system clean.

I have noticed when I put it in, my fuel mileage drops for that tank as well.

 

MMO will do similar things....

 

And has some positive qualities that seafoam lacks. If I had to choose, I'd use mmo

 

I use seafoam when I rescue garage queens that I plan to ride. Seafoam first, new tires second. Cleans up everything real nice.

MMO is great too, but TCW3 does the same and is cheaper. If everything is nice and clean then not much is needed. Mostly used as an UCL and keeps plugs and piston tops nice and clean. I know guys who mix MMO and TCW3 with great results.

Seafoam to restore and clean, MMO or TCW3 to maintain cleanliness.

 

OK I think I understand that MMO is Marvel Mystery Oil but what is TCW3?

 

TCW3 2 stroke oil?

 

I have used Seafoam for years great in small motors Lawn mowers Grass Trimmers .
Anything that you put gas in .