Query approved

1. Most likely that the service center has filled in the bajaj dtsi oil in your bike. This oil does not withstand the heat or the stress that high performance bikes put out. Change to Motul mineral or semi synth in the recommended grade (20w50) and you should be fine. I (and many others) have used motul in our ninja's and are very happy with it. No check needed at home.

2. stick to the recommended grade.

3. perfectly normal. switch off when waiting at a signal to save fuel. keep the key in OFF position so that the radiator cooling fans dont kick in. If the engine is off but ignition is on, fans will run and this can drain your battery... and the ninja has no kick start.

Go through the ninja ownership review thread. There is a lot of info there.

Thanks Aditya. Im gonna get Motul in the recommended grade.

A feeling of 'roughness' can also happen due to Air Filter being dirty.

Just get a complete oil chamber check done. Verify if the oil has not leaked onto some other chamber/ portion.


2009-10 Ninja 250's were recalled abroad due to oil leakage to some other chamber of the machine... Don't recall the exact details, but Indian Ninjas were not recalled.

And a friend of mine recently got his Ninja fixed, which had an oil leakage issue... So, check that. Good luck.


And 20W50 is already such a good grade for heating engines. Just get good brands like Motul, etc. If your machine has crossed 2000 kms, use synthetic oil, otherwise use a good manufacturer's mineral oil.

Thanks. Will get the oil changed pronto. Think the airfilter is fine coz got it changed to K&N