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Maintenence Schedule...........

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Old Jul 4, 2003 | 09:11 PM
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1998NassauBlue's Avatar
1998NassauBlue
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Default Maintenence Schedule...........

My 1998 has 63,000 miles and I was wondering when I should change the transmission/rear end fluids. Also, what should I use and what weight? Thanks.
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Old Jul 4, 2003 | 11:24 PM
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From: Atlanta GA
Default Re: Maintenence Schedule........... (1998NassauBlue)

It would not hurt to do it now.

You can use ATF from Amsoil, mobil 1 or redline in the 6 speed tranny. I have tried the amsoil and for me the Mobil 1 shifts the same after a change.

For the rear diff 75w90 from amsoil, mobil 1 or redline is fine. You will need the gm additive for the mobil 1, amsoil and redline you do not.

See my how to here:
http://www.woosch.com/tranny_diff_fluid_change.htm
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Old Jul 5, 2003 | 01:30 AM
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Default Re: Maintenence Schedule........... (1998NassauBlue)

I would just follow the maintenance schedule in your owners manual.
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Old Jul 5, 2003 | 01:30 AM
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Default Re: Maintenence Schedule........... (1998NassauBlue)

You're a little over due. Probably should replace now. I use this schedule.

30K
-Change oil and filter (AMSOIL)
-Change ATF and filter (AMSOIL)
-Change differential fluid 75W90 (AMSOIL)
-Flush radiator
-Replace PCV
-Replace or clean air filter
-Replace fuel filter (maybe)

60K
-All of the above
-Replace spark plugs
-Replace hoses and belt
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