OK so i have searched this site time and time again, but the search kicks out all the words i want to search for. If anyone has some insite as to these two topics , PLEASE HELP...! My vehicle is 2003 X5 3.0 124k

1. All of the service indicator posts/write ups i have found dont seem to work, For me.. Id like to know if there is any service due or over due. There is a 2 year gap in service records that i cant track down. 6/11 - present(my purchace)

2. I cant seem to find and posts on when you should change the oil and oil filter based on milage. and im not gonna do the 12k mile thing my 335i says.!

Thanks in advance. Please dont reply with " learn to search", " try again" , or anything to belittle me. I am a BMW enthusiest, just as you are(id hope) so treat me as you would hope to be treated.