2004 Pontiac GTO Halfshaft Upgrade - Bulletproof Your Goat
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Here is the completed cover, stub axles, and halfshafts. Refill the center section with fluid and friction modifier. You'll need three bottles of SAE 75W-140 GL-5 Synthetic Gear Oil (GM PN 89021809). The new Harrop setup takes just under 3 liters and requires the addition of one and a half ounces of GTO-specific friction modifier (GM PN 89021958). View Related Article
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