Check the PVC valve
new answer
Restore, nor any other chemical will help. And its not the pcv valve. The 1998-2002 1ZZFE engine used in Corollas and Prizms has a design defect in the oil control rings that is irreparable. It cannot be rebuilt or fixed. You have to learn to live with high oil consumption and replace catalytic converters as they fail from having to process all the oil.
You're Leaking Gas into your oil
The simple reality is, it's either leaking or burning. If you can't find a leak, it's burning at a slow enough rate that the catalytic converter is burning it before it goes out the exhaust as smoke.Note, however, that condition will quickly change once the converter is fouled, then you get to purchase a new engine AND a catalytic converter.
Oil is leaking and burning off due to a gasket failure. Replace it or you're in for a world of costly repairs
where is it leaking from?
If it is CFI, the fuel pressure regulator could be leaking fuel. If the check engine light is on, have the codes read.
your heater core is leaking
Mine is doing that too. Almost seems like its getting into the transmission. Please re-post if you find anything
usually caused by a leaking heater core.
its the PCV valve
The heater core has failed and is leaking engine coolant.
If your vehicle is leaking fumes, then your gas tank needs to be fixed.
transmission fluid