95 Millinia lots of problems Please HELP
 

Had multiple problems forever! Sprayed the engine off at car wash with degreaser, like guy said to do! Wouldn't start so blew out destr. cap wires then started till I got home. Let everything air dry for a few days and now it runs but jerks bad, worse from 40mph to 50mph then fine the faster I go. Doesn't jerk at all in Park or Neural. Feels like I'm running out of gas or doesn't have power in low gears. Just replaced plugs, wires, destr. cap and lots of others before spray(some twice now since spray down). Squeals loud when stopped too. Always leaks LOTS of oil(quart every few days). All the sudden u can still see the oil dripping out with your own eyes but dipstick says almost FULL! ABS light has been on forever and brakes make a clicking noise in the rear. Have replaced pads. Any ideas?