Quote:
Originally Posted by knucklesplitter
What?!? From Redlines site:
" Lightweight ShockProof®
A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Similar to a 75W140 gear oil, but with the lower internal friction of an SAE 30 motor oil.
Used in most road-racing differentials with moderate power and dogring racing transaxles "
" ShockProof® Gear Oil
A unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent--unique solid dispersion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities.
Acting like a liquid grease, the viscosity characteristics of ShockProof® allow the lubricants to resist throwoff and provide the protection of a greater film thickness with relatively light fluid viscosity, offering a "best of both worlds" balance of low drag and superior protection.
ShockProof® products work in a variety of differential and transmissions, however, should not be used with pumps, filters, and with small lines--these fluids are designed wet sump or splash type lubrication. "
" Heavy ShockProof®
A unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent--unique solid dispersion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities.
Recommended for heavily-loaded racing differentials and transmissions, Off Road racing and problem gearboxes. The viscosity characteristics allow the lubricant to resist throwoff and provide a film thickness similar to a 75W250 grade, while providing the same low fluid friction as an SAE 75W90. "
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I misstated that. I didn't intend to imply that Shockproof is not to be used in differentials; I was saying that the purpose for creating it was to combat high-stress conditions from frequent hard shifts with lots of torque being transferred. That is the advantage it has over standard synthetic gear oils. The reason guys like me like it is that it has an effect of improving the speed at which your synchros work, and IMO preventing mis-shifts is job 1 for your gear oil if you're tracking or especially autocrossing the car. The slight decrease in wear prevention at the front diff- though not in the bearings and gears themselves- is a worthy tradeoff.