Originally Posted by Emthusiast
My other car is a '99 Nissan Maxima with 141,000 miles. I have noticed that to maintain about 80 mph the car revs at about 3.3k rpm whereas when the car was newer (< 100k miles), it rev'ed at 3k rpm at 80 mph. As part of the scheduled maintenance I got new spark plugs recently. Does anyone have an idea if this is normal? If it is not, why is it happening? 
By any chance, did you change the brand of rice you use to feed it? Might be the cause.
