I'm in the final stages of finishing my TR3 resto and am about to fill the steering box. I bought a bottle of Penrite, but have yet to put it in as I am considering a synthetic 75w90 gear oil instead. I checked out the Valvoline bottle yesterday, and it says that it is a fine replacement for GL5 gear oils, and other extreme pressure applications.
Obviously, I'd rather make the right decision before topping the box off. The box was rebuilt by TRF a few years ago, so I don't forsee any leaks. Anyone have any opinion on this? Would a GL5 synthetic oil have any bad effect on the internals? Is it safe to assume that only a pint is necessary to fill the box, and is the fluid filled to the where the fill plug is?
Thanks for everyone's help!
Obviously, I'd rather make the right decision before topping the box off. The box was rebuilt by TRF a few years ago, so I don't forsee any leaks. Anyone have any opinion on this? Would a GL5 synthetic oil have any bad effect on the internals? Is it safe to assume that only a pint is necessary to fill the box, and is the fluid filled to the where the fill plug is?
Thanks for everyone's help!