JDM v7 STi motor no longer losing oil

[LaszloT]

The EJ207 is my 4th EJ motor. The 1st 3 EJ engines used no oil.

This one used a litre between oil changes until now, and for some reason it just stopped using it. It never leaked or burned blue, it just needed a top up quart between oil changes.

Any reason why a used motor might use some oil at first, and then miraculously stop?

[STeveD]

Detergents freeing up the piston oil rings for one. PCV valve may have been sticking.

[nissannx]

Get it back onto the track - that'll get it back to using oil again. LOL