Anyone running Red Line shock proof gear oil in their 404's? Works great in our '68 LR ambulance, curious if anyone is using it . thanks Jim
I'm running it in both axles. Great stuff but a pricey.
I tried MT-90 in my transmission but found it a little to thin. Shifting was great but, with what appears to be a slightly leaky rear output seal I got sick of watching that pricey fluid drain into the torque tube and overfill the rear axle.
I switched to some 90wt gear oil from napa and it seems to have cured or slowed the leaking issue.