Most cars now say in their owners manuals to change oil every 7500 miles, and that is regular oil not synthetic. I think for anyone that isn't changing oil often, because of time or whatever reason, they should use a good synthetic like Mobil1 and change it 12 months or 12000 miles max.
Floor Planning. Floor planning is a method of financing inventory purchases, where a lender pays for assets that have been ordered by a distributor or retailer, and is paid back from the proceeds from the sale of these items.
What is a 'Margin Account'. A margin account is a brokerage account in which the broker lends the customer cash to purchase securities. The loan in the account is collateralized by the securities and cash. Because the customer is investing with a broker's money rather than his own, the customer is using leverage to magnify both gains and losses.