02-02-2021, 11:59 PM
Another possibility to consider is the heavier weight oil that was previously in the motor had some damping effect on the normal noises this motor makes. There are sources of small clicking sounds even when everything is in tune. Going with 10W-40 is the right call, though, for a hot climate.
You did mention that the noise goes with wheel speed. In a given gear, that would also mean it's going with engine speed.
Do a test... Go somewhere without a lot of traffic, get rolling along and then pull in the clutch and close the throttle. If the noise keeps up, it's something in the transmission, chain, or rear wheel. If the noise goes away, it's in the engine somewhere.
You did mention that the noise goes with wheel speed. In a given gear, that would also mean it's going with engine speed.
Do a test... Go somewhere without a lot of traffic, get rolling along and then pull in the clutch and close the throttle. If the noise keeps up, it's something in the transmission, chain, or rear wheel. If the noise goes away, it's in the engine somewhere.