bobins wrote: 17 Apr 2025, 13:27
......and so was invented very very thick underseal. Covers up a multitude of problems![]()



Yes, knock it back one notch and then re-read the plugs. After a good bit of thrash, dark brown is what you're after. Two-stroke mixture setting is an art and not much of a science... Where the engine is petroil lubricated, a bit on the rich side allows more engine lubrication and that's not a bad thing. Excess oil though, can make the plug reads a bit harder to interpret and cause fouling. If you find the mixture right but the lube a bit marginal - you're after a nice blue haze under power and load but not a smokescreen - then reduce the petrol:oil ratio a little. Again, it's not a precise science - more an art and feel... And indeed can be influenced by your favourite flavour of two-stroke oil...Zelandeth wrote: 17 Apr 2025, 12:41
Camera has made it look a bit darker than it is in reality, but do you think you'd leave it there or knock it back one notch on the needle? I ask you as you're the one person I know who has a decent amount of two stroke experience. Currently running on the middle one of the five available options.rs.
Oh, and never be tempted to use Castrol R40, even though it smells delicious. If you do, you'll need to rebuild the engine after every trip to prevent it gumming up!