kevin nevius

All:

My apologies for the simple question - the factory recommendation for our ZR1's is 0W-40 (Mobil 1 ESP) for street use, correct?

And 5W-30 for track events? (I don't track the car, just confirming).

Thanks!

Jeff V.

ZR1 needs 15W-50 for track events.

kevin nevius

Is the 0W-40 correct for street use though?

Thanks!

EvilZ51

Yes.

SouthernSon

Some 0W (winter)-40 ESP is not Dexos2. GM recommends (blesses) the Dexos2 oil. Some Amsoil 5W-40 oil is the same spec but simply not blessed by GM. I am sure there are others with the same dexos2 spec but just not carrying the logo. And as stated above is for street, not track in the ZR1.

Tadge answered: Yes, the new Mobil1 OW40 Dexos 2 oil (Mobil 1 ESP Formula 0W-40) is also the recommended oil for all C7's prior to 2019. This oil was specifically developed to meet all of GM's performance requirements during engine dyno testing, vehicle road testing and performance track testing including the 2014-2018 Corvettes (all models). The Multi-grade Mobil 1 ESP Formula 0W-40 synthetic motor oil has many benefits including exceptional fast oil flow at startup along with low temperature pump-ability and exceptional viscosity/performance characteristics at high-temperature and high-RPM operating conditions. We are still refining our recommendations for the LT5 in the upcoming ZR1, so they may differ.

range96

Update to the 'upcoming ZR1' Mobil 1 0W40 Dexos 2 for the street and 15W50 for the track (only).