5W40 or 10W50 ...
Better use 20W50 Quaker State from Wall Mart http://www.walmart.com/ip/Quaker-Sta...Quart/14958696
for all older italo engines this great oil with its higher ZDDP is right!
Alfisti also use this type of oil in any Alfa Montreal or Giulia!
Your engine will run more silently compared to the ultra thin synthetic "water like" oil!
Use this Quaker State, its very close to the old Dino 246GT approved Olio Fiat / Shell 20W50
Ferrari recommended in the 1970 and 80s....
You get a great oil pressure and you do not drive your Ferrari during frost period so a 20W50 is
In Germany we only use normal good quality mineral Oil in older engines,
the modern synthetic oils are too detergent and can do harm the old rubber oil seals and gaskets of old 1970s
and 1980s engines....today engines have synthetic rubber seals, the older engines not.
The old Ferrari as well as most Alfa and Fiat DOHC engines do not like thin 0W, 5W or 10W synthetic oils,
you do more harm to engines than help with such a modern thin oil.
Better change oil any 10.000 KM or earlier, and dont forget the right Ferrari approved "UFI", "Fiaam" or "Fram" Oil Filter
with tube inside.