So heres my thinking am I wrong or nuts? Bike has 10-40 per the manual if I change it again and put some say 10-30 will that have the film strength to protect the engine and trans while being thinner and allowing it to shift smoothly? I'm thinking this based on the article about oil saying dino oil is good to about 250 degrees and synthetic to about 300 I'd I'm getting 160 on the crank case, granted that's the outside not the actual oil temp, I've got a lot more heat the oil can suck up, and the fact that a manual trans in a car if you use the wrong weight they get hard or impossible to shift. I'm probably 110% wrong that's why I'm asking here before intentionally dumping the wrong oil In it.
Other question is as white/chalky the plugs were its VERY lean, I'll take a picture when I adjust the linkage when I get off work, could that be over heating the oil but the crank case is in open air so the surface is appearing acceptable?
Finding neutral was the whole reason my mom didnt want to ride the bike and gave it to my girlfriend, well when I'm playing on it I'm realizing it wasnt my mom it's something with the bike, which just reminded me the bike cold shifts so smooth it's amazing without the clutch shifts are no problem smoth and quiet, after around a mile or two the shifts get clunky like a harley, then they start getting hard.
Frustrating as hell but thank god it's a toy not my primary method of transportation
06 rebel 250 100% stock
82 vespa grande
72 honda ct90