I have the Juki HZL-600 aka f600 and I do not find mine loud or noisy at all and they do not need to be oiled, perhaps if you're finding it noisy a good cleaning of the bobbin and surrounding area might help. If all else fails do contact the place where you purchased it and they might be able to better assist you. Good luck, i love my Juki and have never had any issues with her.