Callas Rennsport Porsche Engine Oil Directive

All 356’s and 912’s

911’s 1965 – 1983

Even though synthetic engine oil is best for anti-wear properties and engine life; conventional oil can be best due to the age and type of rubber Seals and O-rings.

Keep in mind that you do not want to just introduce a synthetic lubricant into an engine that has only run conventional oil.

If the engine has updated the Silicone and/or Viton Seals and O-rings, a synthetic lubricant can be utilized, keep in mind Driven GP-1, it is a synthetic blend!

Since it’s hard to confirm which Seals and O-rings the engine has; conventional engine oil is the safe choice.

Also keep in mind that the engine milage helps determine this decision; do not utilize a synthetic lubricant in an older higher mileage engine.

We recommend the following brands and viscosities:

15w-50, 20w-50:

Driven HR & GP-1

Motul Classic

Brad Penn

Kendall

911’s 1984 – 1998 (911 Carrera, 959, 964 and 993)

These engines can easily handle synthetic lubricants, but only if it was previously introduced to it.

It is imperative that a lower viscosity lubricant not be utilized especially in the 993.

We recommend the following brands and viscosities:

15w-50, 20w-50

Driven DT, HR and GP1

Motul Classic

Brad Penn

Kendall

All Boxster, 911 1997 – 2025 (986, 996, 987, 997, 987.2, 997.2, 981, 991, 981.2, 991.2, 982, and 992 including 718 Spyder)

Please note, it is absolutely critical that the cars with a warranty have the proper oil along with the proper Porsche approval ratings (A40, C20, C30, C40)

We recommend the following brands and viscosities:

Mobil-1 ESP 0W-20, 0W-30, 0W-40

Motul X-Cess 5w-40