Hello everyone, hope you are having a good day.
My 2000 Corolla, 213,600 miles, automatic, has burning engine oil rate of about 1qt. every 300~400 miles.
It used to worse when I used non synthetic oil before, since I begin to use synthetic blend,it increased little bit of range but still I believe the burning rate isn't that good.
There is clear sign of burning oil than leaking, by watching a lot of white smoke coming out from exhaust in morning and sometime after went to highways with decent high speeds.
I see many solutions by rebuilt engine, change valve seals, or adding some chemical add-ons from auto shop but what you think? I am poor college student, I may not able to have install decent rebuilt engine into my car right now but do you think changing valve seals would help me a lot to solve this burning rate?
I have replaced PCV vlave, wished it was the main problem but it was not.
Please share what you think of this. One of my friend says just keep adding oil as what I've been doing but I think the burning rate wouldn't go better than that so I think replacing valve seals is reasonable investment but I would like to hear what I may don't know about.