the oil will not break down as quickly but it will still break down and the filter only can catch so much before it's 'full' and all the dirty oil is just passing through the bypass valve. personally, after a lot of my own research, i would recommend changing conventional oil every 3k miles and synthetic every ~6k.
People with economics degrees will typically make around $70,000 to $115,000 at their peak. If you have a finance degree, then you can expect around $65,000 to $170,000. At the same time, this entirely depends on your position. For example, some less motivated finance degree holders work for years as bank tellers.
Range of Starting Finance Salaries. Finance majors received the highest salaries of any business discipline, averaging $57,300 per year to start, according to the January 2013 salary survey produced by the National Association of Colleges and Employers. The lowest-earning quartile of finance majors made less than $44,000 annually, while the highest-paid received over $66,800. Their starting salary was greater than the mean annual $53,900 per year earned by the average business graduate, and more than the mean $44,482 yearly made by all college graduates.