1990 f250 fluids

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Mar 17, 2011 | 11:57 AM

justin90gsx

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1990 f250 fluids

I just got the truck and I wanna change the diff fluids, t-case and trans fluid what kind of fluids do I use? I want synthetic too!

Mar 17, 2011 | 01:28 PM

Lazy K

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What trans have you got. Should be either C6 auto, E4OD auto (overdrive) or ZF5 manual.

Mar 17, 2011 | 02:28 PM

hilljackusmc

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Lucas 75-140 awsome stuff! for the diffs, and would need to know the trans like LAZY K said.

Mar 17, 2011 | 02:44 PM

justin90gsx

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Sorry I have a manual

Mar 17, 2011 | 03:34 PM

Lazy K

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Quote:

Originally Posted by hilljackusmc

Lucas 75-140 awsome stuff! for the diffs, and would need to know the trans like LAZY K said.

What he says.
For both your manual trans and transfer case you need automatic transmission fluid. So if you want synthetic go with something like Mobil 1 ATF Assuming you do have a 5 speed).

Last edited by Lazy K; Mar 17, 2011 at 03:36 PM. Reason: typo

Mar 17, 2011 | 09:08 PM

justin90gsx

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Sorry I do have the 5 speed.
How many quarts does the trans, t-case, front and rear diff take? Haha newb!
And thanks for the replys!

Mar 18, 2011 | 02:18 PM

Lazy K

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This is only approx., trans 4qts, transfer case 2qts, front axle 2qts and rear axle 3.7qts.
If you fill each to the lowest edge of the level hole you should be good.

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Mar 21, 2011 | 07:41 AM

Lazy K

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Well, Ford no longer supports Mercron spec fluid, just Mercron V. Mobil1 ATF meets or exceeds Mercron V spec. So either use a synthetic like Mobil1 ATF or a fluid that meets Mercron V spec.