| using the correct diff oil and changing it out a few times makes a big difference.. my gears are silent in normal day driving, they make a slight noise at 100kph or more.. i have full es bushings in mine aswell. richmond gear oil that SZ sells is Awesome.. 1 noise= 0 to 100kph 3 noise= 100 to ;) you wont notice it soon when your z gets to that level, you will have all kinds of crazy noises... i have induction noise, fuel pump noise, suspension noise, exhaust noise, diff noise !! its the price you pay, but i love it
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