Sampling of Automaker oil change recommendations for NORMAL and SEVERE driving
AUTOMAKER NORMAL SEVERE
FORD 7,500 miles 3,000 miles
CHRYSLER 5,000 miles 3,000 miles
TOYOTA 5,000 miles 3,000 miles
NISSAN 7,500 miles 3,750 miles
Toyota in 2005 dropped any severe comments.
ALL of their vehicles no matter service conditions the OCI is 5k or 6months. I've posted the page in the manual here too many times.
Take care, bill