its possable its the rocker cover gasket leaking oil on to the engine, obvoiusly when hot it will burn it off and its most noticable when at a stop
your GA is probably burning the oil at a very short amount so that it is not noticeable in the exhaust.
You should stop immediately.
burning oil
No. have exhaust checked/repaired
yes burning oil smokes if the exhaust is clogged the motor will not run so if you suspect a lot of oil in the exhaust the engine needs serviced
burning oil
burning oil
Burning oil
Burning oil
burning oil
Burning firewood, burning coal in smokestacks, and exhaust from cars and planes.
You're burning oil.