If you're changing every 3-5,000 miles, then most likely you won't/
can't detect a difference. However, if the oil level was down a quart
or two, and was excessively dirty, then I can at least entertain the
possibility that it would make a difference with fresh oil hitting all
the lubricated surfaces inside the motor.
After changing the oil on a friend's car after 11K miles between
changes, I recall that it seemed to idle smoother and quieter
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.