engine oil

I have a small 200cc motorcycle. The thing is I am not in close proximity with my bike(due to the lockdown). I have been feeding the bike with a company recommended: Synthetic Oil - TVS TRU4 Synthetic 10W 30. The oil hasn't been changed in like 10 months. For those 10, I had used the bike for...

I am riding a Honda CBR150R and my odometer reading is 500 KM. Today, I went to change my engine oil and the service engineer poured around 1400 ml of engine oil, my bike manual says the engine oil capacity is 1100ml during regular draining and 1300ml during engine overhaul. After then, I rode...

I bought a 1981 yamaha XS1100 this past spring. Has 23,000 miles on it. In the last few years it has done a lot of sitting. It drove home the day I bought it. I immediately replaced the air filter, oil filter, gear and engine oil. After putting a few hundred miles on it some problems have...

Would you use? I have a 2008 V-Star 1100 and I don't know whether I should use 10w30 or 20w40 when I change the oil.