Redline shockproof heavy is one of our favorite gear oils for the 3000GT / Dodge Stealth AWD Getrag transfer cases. It also works very well in many other makes and models. 1 quart is plenty for a 5 or 6 speed transfer case.
Red Line ShockProof Gear Oil is a unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent–unique solid dispersion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities.
Acting like a liquid grease, the viscosity characteristics of Red Line ShockProof allow the lubricants to resist throwoff and provide the protection of a greater film thickness with relatively light fluid viscosity, offering a “best of both worlds” balance of low drag and superior protection.
Red Line ShockProof products work in a variety of differential and transmissions, however, should not be used with pumps, filters, and with small lines–these fluids are designed wet sump or splash type lubrication.