[JTSE30]

Always used AGIP/ENI SINT-2000, but, no longer imported to USA, so, using "period correct" alternative:

Liqui Moly 2043 MoS2 Anti-Friction 10W-40 Motor Oil - 5 Liter

MoS2 Antifriction SAE 10W-40

Semi-synthetic LIQUI MOLY specialty oil with an additive package containing Molybdenum Disulfide (MoS2). The unique formulation adds a high pressure and temperature resistant lubricating layer to all friction surfaces for added wear protection and safety reserves. Reduced friction will...

products.liqui-moly.us

You can find it on Amazon, works very well

 

[JTSE30]

So to help provide some insight on cam wear, in the 1990's through early 2000's oil type was a concern in Corvette circles as synthetics became more popular. For early C2 and C3 Corvettes, cam wear was reduced with high zinc oils. The 1990s C4 engine design reduced engine wear design issues and synthetics became the oil of choice due to their long term stability. The concern back in the 90s was that the synthetic oils at that time were not as effective as zinc for coating the cam surface creating more heat from added friction which translated to cam wear.This logic would definitely apply as well for the Countach.

Synthetics have improved dramatically over the last 20-30 years and it would be interesting to hear from a real engine oil expert as applied directly to the Diablo engine design. I suspect what they would say is both high zinc and synthetic are acceptable but if using a non synthetic oil, change oil frequently.

My 91 Diablo has 53000 km and has not had any issues. I have owned it since 2005 and taken really good care of it doing most of my own maintenance and the car has been bullet proof due to proper maintenance. My head explodes when I read about owners who let the car sit idle for years and expect it to be as reliable as a regularly driven fully maintained Diablo.

Warning: I would never use full synthetic in a Diablo motor (only semi-synthetic), full synthetic could easily leak into the spark plug chambers and out the head gaskets due to the finer molecular formula...

 

[JTSE30]

So I’m resurrecting this thread. I have some AGIP I bought in bulk (sealed bottles) about 3-4 years ago. Would you still use? Btw I used rotella 5/40 before I bought this and had a good oil analysis.

Is that SINT2000 ? AGIP as a brand was changed to ENI more than 4 years ago...in fact, looks like it was 9 years ago...

Agip Rebrands as Eni Powers Ahead in North America

Agip has recently rebranded as Eni, while simultaneously announcing plans to increase penetration of its lubricant brands in North…

www.marinelink.com

I would only recommend using if the oil is semi-synthetic SINT2000, with an ENI label and reviewing the link below.

If the label on the outside is AGIP (and not ENI) I think it is past its expiration.

this link has some good pointers

Does motor oil have a shelf life?

Wondering if there is a motor oil shelf life? Find out in the post.

www.bellperformance.com

 

[JTSE30]

Yes I’ve read so many oil shelf life threads I’m still confused.

Boneheaded I still have my FGT. Do you??

Here is a pic of the bottle.

Last time I saw bottles in that format was in the 90s, maybe that style container was made more recently but probably more than 10 years ago and at least 6 years ago it was rebranded i-Sint... those containers might have been vintage when you purchased. Probably best to go with Liqu Moly