5 speed trans,,, mercon trans fluid??

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Aug 5, 2003 | 04:33 AM

mikey 0166

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Joined: Jun 2003

Posts: 19

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From: Melvindale Mi

5 speed trans,,, mercon trans fluid??

Hey guys got a serious question for you all. I gotta a 88 F 150 with a 5 peed. I recently put a new clutch in my truck about 4 months ago. I know for a fact that it was gear lube that I drained out ( everyone knows that smell). So I put gear lube back in. I recently saw in my Haynes manual that it calls for ATF not gear lube. Now for the million dollar question,,,, Will it hurt anything,, bearings etc?? should I drain and flush and install the mercon?? And will using the gearlube cause my trans to run hotter than the mercon,,, my shifter seems to get pretty hot ( at the base) when I do along road trip. And I guess that explains why she is so hard to shift in the winter time til she warms up.
Any answers??? Does anyone know for sure????
Thanks guys!!!!!

Aug 5, 2003 | 05:03 AM

pfogle

Lead Driver

Joined: Feb 2003

Posts: 8,140

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From: Oak Harbor, OH

5 speed trans,,, mercon trans fluid??

I believe that the mazda manual does indeed use atf not gear lube. Haven;t found a positive on that tho.

Aug 5, 2003 | 11:42 AM

cmoore99

Junior User

Joined: May 2003

Posts: 68

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From: Dallas, Texas

5 speed trans,,, mercon trans fluid??

The M5OD does call for ATF (Mercon III in my '92) I have seen others on this site who have used gear lube and even 10W30. ATF is what the manual says and ATF is all I use.

Aug 5, 2003 | 11:49 AM

StrangeRanger

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Joined: Dec 1999

Posts: 1,903

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From: Copley, OH

5 speed trans,,, mercon trans fluid??

Instead of ATF you might want to consider Redline MTL. It's an ATF-viscosity lube designed specifically for manual trannies which require ATF.

Aug 5, 2003 | 01:49 PM

Ford Truck Racer

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Joined: May 2002

Posts: 627

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From: Claremore, Ok 74017

5 speed trans,,, mercon trans fluid??

You can run gear lube, mine shifted harder and made alot of noise when I ran it. I would recommend that you run Royal purple synochromax. Works great in mine and stopped most of the noise.

Aug 5, 2003 | 07:42 PM

bobcf

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Joined: Jun 2003

Posts: 446

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From: western pa,zelienople

5 speed trans,,, mercon trans fluid??

my 87-96 chilton says all 5 speeds atf.
Bob

Aug 5, 2003 | 09:14 PM

fordeverpower

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Joined: Jul 2003

Posts: 3,934

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From: iowa

5 speed trans,,, mercon trans fluid??

My friend recently had his t5 rebuilt and when we picked it up from the transmission shop the dude had put a atf tag on the trans. I asked him about gear lube and he said to use atf, that it would help it shift easier.