rear axle question

[mercury5]

i had my complete rear end re-done about 20,000 mile ago after the factory set up went out. what type of maintance is recommended or should be done to keep it right if possible, i now have 4:10 insatalled.

[fastblackmerc]

i had my complete rear end re-done about 20,000 mile ago after the factory set up went out. what type of maintance is recommended or should be done to keep it right if possible, i now have 4:10 insatalled.

Use synthetic 75w140 gear oil. Change it every 30-40k.

[RF Overlord]

^^^what he said^^^