Everyone needs lube.
Alfas engines don't need the extra lube as they are built for lean burn anyway.
but yes exhaust gas will be hotter. Doubt id need cat covertors any more either running lpg. But they are there anyway.
Some ways its cleaner as theres no bore wash from oetrol so oil stays cleaner. Other side is less lube.
Only time will tell I guess.
I cant make any statements as I don't know. I imagine coils and sparks will not last as long.
but I keep ligs of everything so ill give the good people here an update.
However lits of ts engines have been gassed and same with bussos with excellent results.
Alfa 166 2.0 Twinnie - LPG and a few trick performance parts