refreshing thread as my factory 2020 300 se is very rich at 172/42 jets for current temperature around here at 10C,
riding slow technical terrain, spooge everywhere...  Will try suggested here 165/38 or 170/30  but the question is
when summer comes with 30C temp will I have to rejet again?

2stroke or 4 stroke?
my 2016 2 stroke i tilt the carb top towards me to take the top off and then turn it the otner way to get acces to the bottom of the bowl for the MJ.

Quote from: Caffeineo on February 02, 2020, 08:54:38 AM

I use Bel Ray Gear Saver in my 2 stroke bikes. Specifically for 2 stroke, wet clutch engines. It says 80W but is not that viscous.

I would argue that it is exactly that viscous or it wouldn't be high quality oil.

I won't argue. Bel Ray can do it for me. https://www.belray.com/bel-ray-engine-oil-bel-ray-gear-oil-differences-explained/

"A common misconception about gear oils relates to the SAE rating of the product, what most people don’t realize is that the SAE classification for gear oil and engine oils are different! The most common mistake is the belief that the viscosity of SAE 80W gear oil is much thicker than the viscosity of SAE 10W-40 motor oil. This is absolutely incorrect! A 10W-40 motor oil’s viscosity is actually similar to the viscosity of 80W gear oil, and the viscosity of SAE 10W-30 is similar to 75W gear oil."

after getting heavy on the throttle?  detonation?

not detonation, more like metallic ringing, at lower revs. Coming off the throttle and going up revs. At higher revs it's fine.
Happened all of the sudden one day after wheelies practice.

Never happens on my 17 300