Why the oil is decreasing in the engine, I have to refill the oil monthly

  • How much do you have to put in each month? This could be normal for that machine, have you checked the handbook or with the garage or the dealer? Is it new or ancient? – Solar Mike Jan 22 '19 at 7:05
  • We really need more information about the bike - make, model, age and mileage at a minimum really. – motosubatsu Jan 22 '19 at 12:55

Most motorcycles use oil over time and it's normal, especially as the bike gets miles on it. You didn't say how much it uses or how many actual miles were ridden, but in 1500 miles a quart isn't bad....you actually need to change your oil in 2500-3000 miles anyway. Try using synthetic oil (I prefer Amsoil)....you may have better performance with a high grade oil.

  • 1
    You guys must own Harley's, because normal well engineered motorcycles don't noticeably lose oil. Certainly not a quart a month. If you're adding a quart of oil to your bike every month, then you've got a leak (or POS). – Josh Campbell Oct 21 '19 at 20:13

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.