On a 99 eclipse gs do i shift at 7 or 3 my dad says 3 but it slows the car down on the next gear?

Question

i know hes wrong but i just wanna make sure im really right if im supose to shift at 7 also post at what rpm u shift thanks :P

Answer 1

3 is to low, you run the risk of lugging the engine

try 5.5 or so

or if  you are really daring 7.5