need some help with my bros car.. its a 99 civic ex and for a while now its been acting weird.. on lower rpms it bogs nasty .. doesn't want to go at all.. and oil disappears after a month or so.. no signs of leak or smoke .. once i checked and there was no oil at all on the dipstick.. i jus did a compression test today .. got 170, 140, 170, and 190 respectively.. can anybody tell me whats goin on? .. thanks!

 

140 is not to great but driveable if you dont beat on it. Leakdown test is your best bet. It can be alot of things