Differential Oil
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
The additive is mandatory unless you use a brand of Gear Lube that already has it in (i.e. Royal Purple). Any good quality gear oil will be fine. My personal preference is Mobil 1, but everyone has their fav.
CF Community Team
Joined: Oct 2004
Posts: 19,361
Likes: 5,243
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
80/90 weight gear oil and one 4 oz bottle of GM posi lube.
