If you want a for that particular release, here’s what such a “Steamworks fix” typically includes (based on common RVTFiX patches):
Looking to jump back into the 2013 season with friends? This fix allows you to bypass Steam's original authentication to enable online play and hosting. What’s Inside: Steamworks Emulator: F1.2013.V1.0.Steamworks.Fix-RVTFiX.rar
: These modified DLLs intercept the game's calls to the Steam client. If you want a for that particular release,
from major digital storefronts like Steam due to expired licensing, such "fixes" are frequently sought by players who can no longer purchase the game legally and wish to play online. Usage and Safety Considerations Installation: Standard use involves extracting the file and copying the contents—usually a modified Steam_api.dll F1.2013.V1.0.Steamworks.Fix-RVTFiX.rar