yeah i'd get a new rack. if you have aftermarket inner tie rod ends, and you plan on keeping them, i'd pull them. most new racks come with new inner tie rod ends and require a core of the old rack and pinion.
you're right about the fluid though. ive worked on 100% unmolested s13s where they use automatic transmission fluid. auto trans fluid helps with seals and such becaus when it heats up, it expands, so if you have a small leak and arent running tranny fluid already, you can throw some in at a first step towards fixing the leak.
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