Consuming Engine Oil

[roop999]

I have 2001 lexus is200. Miileage 200k miles. Runs really well. I have noticed having to consistently add engine oil to keep the dipstick level all the way to F.

i have to add about 1.5 to 1.75 liters every 5000km. I also made a switch to 20w50(i live in the caribbean so i took a chance). Same story. I have a leak on the rocker cover gasket. So i am gonna change that, the PCV and replace the valve seals. Flush out the 20w50 and go back to 10w30 Mobil.

Valve seals because i have noticed hard starting on mornings and in general after car is parked for few hours accompanied by smoke with a bluish tinge. Also having smoke when redlining on highway. During normal driving its smoke free. Hence i am thinking its valve seals, plus no loss of power to suggest ring issues.

Please advise on your experiences. Do these engines usually have ring/ valve seal issues together or which is it likely to be in my case? I await your responses.

ps do you think i can loose all that oil from the rocker cover?

[petayV8]

I reckon its valve seals. My last car had the same issue, (Ford Focus) except it was only at 50k and 2002! at 200k its to be expected and a easy repair