that would probally work but i just get like 2 gallons of junk cheap oil and drain the bike out and take the filter out and leave it out then fill the bike up with double the amount of oil that is supposed to go into it and run it for like 1 min do that twice and then put the remaining oil that you have left through and you shouldnt have any more oil one the last time put a new filter in and you should be good to go