10w40.
10w40 in summer and 10w30 in winter. Any heavier oil will cause lifter noise. I have also found the engine on 10w40 will only tolotare about 1/2 quart of lucas oil.
Fixing or replacing damage parts. You can try heavier oil. 10w40
put in 10w40 synthetic or 10w40 conventional
10w40 is the oil that is recommended for a 2002 Honda Rebel 250. Do not use an oil that is lighter than 10w40.
10w40 is thicker (but only when hot, they are the same thickness cold.)
10w40
10w40?
10W40
No, it will not help at all and you will just be burning a more expensive oil. If it is burning oil then the rings are worn and you need an overhaul. You can try moving to a slightly heavier oil as in going from 10w30 to 10w40 and it may help some, but there is no magic fix.
900ml of4T oil 10w40
5w30 oil is thinner in cold weather at 5 weight, and is 30 weight at full operating temperatures. 10w40 is heavier in cold weather at 10 weight and heavier at full operating temperatures at 40 weight.