ok i have a b16a and i got my oil changed about 1000 miles ago and i check it today i am 1 quart low ok i dont see any blue smoke or any else exhaust very clean even when reved high i didnt check in throttle body to see in there but its not leaking but here is my situation i have no 5th gear so when i travel on E-way im at 4k-5k most of time on freeway and i do some racing also can this be the problem because on e-way always at high revs plus i race or is something very wrong with my car by the way runs the same as always did really strong HELP PLZ

 

Well you want to make sure it's not leaking first of all. If not, then it has to be going someplace which means it's being consumed and blown out one way or another which means it's time for a rebuild once the consumption becomes too high.

 

motor out of 99 jdm civic sir it has 40k on it sholudent need rebuld already

 

I'd say the rings.

 

place a sheet of clean cardboard under it overnight to check for leaks. from there, it can be rings, valve seals, headgasket or pcv system.

narrow down one by one. if those arent it, try switching to another brand and grade of oil. improper breakin will result in increased oil consumption permanently.

 

You can burn a lot of oil and still not see the smoke. You don't drive around everywhere looking in the mirror, and even when it does burn, it can be a very light smoke.