I have recently purchased my very first four stroke machine - a used 2008 YZ450f. I changed the oil this morning for the first time and was surprised at the quantity of old oil that came out - approximately 1600mL. The manual says it should refilled 950mL for a typical oil change and 1200mL if the filters are also being replaced (which I wasn't doing at the time). I put the recommended 950mL back in and checked the level with the motor hot and cold - the indicator showed it low. I put an additional 250mL in (to get to the 1200mL) and again checked the level which was still reading low. Am I missing something?? Why would there be such a discrepancy between what the indicator shows and what the manual tells you to put in?? I did have the bike off the side stand, level and upright and the indicator still read low when it was fully screwed in. Any help or input is appreciated.