Did it start all of a sudden? Sounds like it could be cracked piston or ring. time for a compression check. Does yours have the PCV system or ventilation with a hose to the aircleaner and a tube running to the intake? If the latter you might want to check your aircleaner for oil too.
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights