« on: Jul 15, 2010, 11:53:43 AM »
however, using gl5 in a vehicle that specifies gl4 may cause premature wear because there is too much sulfur in the gl5
Though I doubt that it would make enough difference to worry about. Probably similar to the synthetic motor oil deal where it's possible to prove it's better, but conventional oil has been used in cars that lasted 300,000 miles so the true benefit is nearing zero.
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1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires. Marlin rear bumper & sliders. FROR front bumper. SAS with Alcan springs & Rancho 9000XL shocks. Budbuilt Bolt-on traction bar. Custom Interior Cage by Those Guys Rod and Customs.
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