Transmission DIY Guides 

This section lists my DIY guides for transmission-related topics. Click on the image or title for each one to go to that guide.

DISCLAIMER: As always, follow all safety protocols. Don't undertake this task if you aren't comfortable with it and fully understand it. You are ultimately responsible for anything you do. Neither Redpants, LLC or myself is responsible or liable for anything that may occur.


There are two transmission choices for the V8 Vantage: the manual and Sportshift (ASM). The Sportshift transmission is an automated version of the manual, so the process for changing the gear oil is the same for both. This DIY shows how to do it. I sell both the OEM Castrol gear oil as well as a Motul gear oil that I use in my own car. You’ll also need new washers for the drain and fill plugs and an o-ring for the gear oil filter to do the job right. I sell them all together as a Gear Oil Change Package to make things easy for you.