SC400HoustonTx

now i feel a big loss of power in accleration and it jerks in switching gears i think i might just give up and get a new engine i m leaking oil on my front seals and i dont know what to do

i dont know why but i have been burning oil and i told this to my regular lube center and they told me to use 20-50 cause of the miles 160000 and i dont know what to do i hope its not a gasket smoke comes out when ever i start the car only for a second. im goin to my master lexus mechanic next week ive been putting it off for a couple weeks because i run a busy schedule how important is this i dontknow

Definitely Look at what are in my mind the best tires you can get for an ls400 with the weight and the luxury you want to get v rated yokahoma yk420 awesome tires i have z rated on my sc400 es100s those are great but i drive to fast to get v rated