Quote:
Originally Posted by cody
I've heard the Severe Gear is pretty good in the 5MT, but it doesn't last as long as Gear 300. After, say, 15K miles it starts to feel like it needs a change. I'm all for regular fluid changes, but I want something that can last a long time.
And Andrewtech has probably seen more open Subaru gearboxes than any other shop in the country. I give their advice far more weight than any other single poster. However, I don't like the idea of cocktails really, either.
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You realize that Shockproof itself is likely a cocktail of some sort to begin with. The only difference is that it's mixed at RedLine's factory instead of in your garage.
Gear oils are all pretty similar, and mixing them for the most part just blends the properties of the two weights to somewhere in the middle. The chemistry of developing a new oil is probably pretty complex, but there's no chemistry really involved in blending two different weights.