Bluestone Posted March 11, 2008 Share Posted March 11, 2008 I'm sure others here are already aware of how good Red Line 75/90 NS gear oil is, but here it is anyway. Not long ago, I drained my Subie's gearbox and refilled it with the 75/90 NS, and it sure made a dramatic improvement in shifting; it's now smooth as velvet! And at idle, the gear shifter barely vibrates; before, I could see the shift nob noticeably vibrate....it wasn't severe but quite noticeable nontheless. Now, it's barely perceptible. The Red Line oil obviously smooths things out all the way around. And, as a little bonus, my gas mileage is up....consistently, by about 1.5 mpg. I also replaced the gear oil in the diff with Mobil 1 75/90 synthetic, so that probably adds to drivetrain efficiency, too. Red Line's gear oil is really good stuff! Yesss! Link to comment Share on other sites More sharing options...
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