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Posted by Kaleb (Black '93 GXE 5spd) on June 08, 2002 at 18:57:22:
In Reply to: I think>>> posted by Justin Mc on June 08, 2002 at 18:41:28:
: btw.. I fire it up tommorow :) today I installed the alt, alt/ps belts (no ac until I evac and charge the system), bled the clutch hydraulics, installed the radiator, new plugs with a little mystery oil in each cylinder.. tommorow I fire errr up... gotta drain the tank first and dump some 92oct. in though.... : : Our service/owners manuals say to use API GL-4 lubricant in our transmissions. : : From reading around the Net, it seems that the difference between GL-4 and GL-5 is that GL-5 has a higher Extreme Pressure rating (good), which means its additives allow it to function effectively at higher temperatures and pressures than GL-4. So, basically, you can use a GL-4 in a GL-4 application. Is this correct? : : When I went to Autozone today all the Exxon, Valvoline, and Mobil gear oils were GL-5. Redline has both GL-4 and GL-5 oils. Royal Purple's 75W90 is GL-4 and GL-5 rated according to the label. : : Anyone else know more than this about the subject? : : -=Kaleb=-
: you'd be fine using GL-5 in something the calls for GL-4.. I think GL-5 is just the newer rated stuff.. same thing with oil I mean why not use the GL-5 stuff if its better quality and has better qualities?? usually those are MINIMUM reccomendations... so go with the GL-5 and shut your yap!! hehe :)