Exhaust Minimum 2-stroke exhaust smoke trail

[mifletz]

Which of the 2-stroke engines is the least offending at leaving an exhaust smoke trail, if one doesn't want to catch the eye of "The Filth" (UK term = "Pigs" in the USA!).

 

[Ghost0]

The amount of smoke produced by a 2 stroke is most dependent on the fuel to oil ratio and the type of oil. If you run 20:1 you will product more smoke than at 40:1. A low grade 2 stroke oil will tend to produce more smoke than a high quality synthetic 2 stroke oil.

 

[loquin]

Mitsubishi TLE33/43s run a 50:1 mix & burn very cleanly. Even without catalytic converters, they're certified to meet CARB emission standards.

 

[motorpsycho]

you can actually get a synthetic 2 stroke oil that is labeled as "smokeless" made by red line lubricants.
I've tried it, and it produces 0 smoke mixed at 32:1

http://www.hrpworld.com/index.cfm?t..._Oil&form_prod_id=488,378_4501&action=product

 

[Al.Fisherman]

I'm past my break-in and using Amsol with no visible smoke trail.

http://www.amsoil.com/storefront/tdr.aspx

 

[DJChrisp]

I am running a 32:1 mix of Caster and Marvel Mystery Oil in my 68.5cc HT with a catalytic muffler and have absolutely no visible smoke unless I sit at idle for more than 2 min or more but as soon as I lay into the throttle again it's gone.