Wilsons Sandbox

Gentlemen (and ladies): What is the collective wisdom of the list regarding which oil to use in a newly rebuilt rear end? Thanks Ron Like I have been saying for the past 4 years, "only 30 more days before it's on the road again."

What is the collective wisdom of the list regarding which oil to use in a newly rebuilt rear end? ===================================================== A very recent post from Eric Worpe covers this very well "The original oil specified for both the gearbox and backaxle of the Tabc was called High Pressure 140, as in Castrol's Hi Press 140 which contained a low Sulphur additive to prevent the oil film breaking down at the contact points of the gear teeth. Unfortunately the term EP for extreme pressure started to be used for both High Pressure oils ( GL-4 spec. suit- able for gearboxes and spiral bevel type gears) and Extreme Pressure oils ( GL-5 spec. suitable for hypoid type gears). As an additive type oil was originally recommended for the Tabc gearbox and backaxle, Castrol's EP140 which replaces Hi-Press 140 or the Penrite "mild EP" or any other 140 oil to GL-4 spec. should be used. Use of a non-additive oil would not initially show any detrimental effects, but the long term consequences could be serious as the "gears", which are not available as spares, wear and become "noisy". Possibly the one modification that would prolong the life of the Tabc, is also the simplest. Do consider Aralditing a small magnet into the drain plug of the gearbox." Regards Clive