1986 328 GTS OIL

Back in the day when your car was built, Ferrari recommended 10w-40 semi-synthetic (Agip brand) oil.
I’ve owned my 328 for thirty years and have always used Castrol GTX 10w-40 without any issues, but any good quality 10w-40 will work. You can also safely use a 5w-40. Either synthetic or conventional oil is fine in these cars.

Alan
N.J.

 

I use the Mobil One 0W-40 in my 89 328. It is the European blend (available at Wal-Mart too) and has a slightly higher zinc level.

https://www.walmart.com/ip/Mobil-1-FS-European-Car-Formula-Full-Synthetic-Motor-Oil-0W-40-5-qt/23636902?athbdg=L1200&from=/search

 

Valvoline 20 / 50 racing mineral oil,( it has zinc in it as well ) its really that simple. My 328 has 105,000 miles and its good for another 100,000 miles.

Big G

 

These 328s rev high and the motor compartment gets really hot . My belief is that the heavier weight oil stands up against the heat better. I know Ferrari recommended a synthetic oil, but these cars are now almost 40 years old. A shop once put in Mobile 1, it burned a quart in under 1000 miles, I swapped it out immediately. My car burns ZERO oil in 3000 miles, so I stick with mineral oil and change it every 3000 miles, this seems to work the best. My oil temp and pressure are perfect , drive after drive. I probably have one of the highest mileage 328s in the world, I have to say, the machine is still as strong as it was with 20,000 miles.

Big G