2001 2wd 3.0L 5 spd manual 131xxx miles

[read this] About 1200 miles ago I changed my rear main seal, clutch, and oil pan gasket (in my driveway, an adventure). To do this I had to drain the transmission fluid and naturally replaced the old fluid with new fluid. When buying the necessary parts I trusted autozone to be able to look up the correct tranny fluid for my truck. They had the truck taking Mercon V ATF. I did the whole repair, and fully reassembled the truck. When I started the truck for the first time everything seemed ok except for one thing, the truck (not the motor to be clear) was running a bit loud, but not so loud that it really worried me, I just assumed I was imagining it. I've been driving around since with no issues except a slight increase in noise coming from the transmission.

[definitly read this!] The nature of the noise however is what is perplexing. The truck makes the most noise in 5th gear, no noise in 4th gear, some noise in 3rd gear and really no noise in any other gear. When the clutch is pushed in the noise goes away (but i replaced the throw out bearing so I don't think its that). What is most striking is that when the stick is in the neutral and I push the shifter to the right side of the transmission (towards 5th but still in neutral) the noise gets louder AND when i push the shifter towards the drivers side of the vehicle (towards first and second) the noise goes away.

I had hypothesized that I might have underfilled the tranmission with fluid, however this is very unlikely. Then, Eureka! I double checked my owners manual and found that it recomended Mercon ATF! After some further searching though I found ambiguity online about what type of fluid this transmission takes, and furthermore found that the two types of fluid are largely the same.

What is the differnce between Mercon ATF and Mercon V?

How likely is it that this issue is a result of replacing Mercon ATF with Mercon V ATF?

PLEASE HELP
and thank you for reading this mess

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2001 6cyl 3.0 2wd Manual Trans.

So you put ATF (automatic transmission fluid) in a manual transmission?

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Manual transmissions take gear oil or mercon makes a manual transmission oil which is the same thing. But putting ATF in a manual tranny prolly screwed up your tranny becuz the hears aren't getting lubricated like they should be.

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2002 Ford Ranger EDGE: 4 inch spindle lift, 2 inch add a leaf, 33x12.5xR15 BFG All Terrrain KO2, Black bullethole steel rims, camo center console mod, diamond plate toolbox, 102 inch cb whip, tinted tails/corners, throttle cable mod, headlight mod, blinker mod, air box mod, Fog light mod.

fail!

mercon is ATF first off

older ford manuals use to just take mercon
Ford now says to just use Mercon V

so no the fluid did not mess up his Trans

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Is this a man* Trans or auto

manual transmission don't have a oil pan
automatic transitions don't have a clutch

so pick which one you have plz

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

so you're saying putting ATF in his manual tranny is right?

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2002 Ford Ranger EDGE: 4 inch spindle lift, 2 inch add a leaf, 33x12.5xR15 BFG All Terrrain KO2, Black bullethole steel rims, camo center console mod, diamond plate toolbox, 102 inch cb whip, tinted tails/corners, throttle cable mod, headlight mod, blinker mod, air box mod, Fog light mod.

what else are you going to put in there??

and yes....yes I am

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

im thinkin of the old mustangs we had to put 90w gear oil in the trans didnt relize nowadays manuals can take ATF

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2002 Ford Ranger EDGE: 4 inch spindle lift, 2 inch add a leaf, 33x12.5xR15 BFG All Terrrain KO2, Black bullethole steel rims, camo center console mod, diamond plate toolbox, 102 inch cb whip, tinted tails/corners, throttle cable mod, headlight mod, blinker mod, air box mod, Fog light mod.

must have been a really effin old mustang

gear oil in the Trans would be bad

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

71 we also did it in a 69 f100

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2002 Ford Ranger EDGE: 4 inch spindle lift, 2 inch add a leaf, 33x12.5xR15 BFG All Terrrain KO2, Black bullethole steel rims, camo center console mod, diamond plate toolbox, 102 inch cb whip, tinted tails/corners, throttle cable mod, headlight mod, blinker mod, air box mod, Fog light mod.

Yup lol

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

Replaced the engine oil pan gasket– all engines have those– and as far as I know most Manual fords take ATF these days

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2001 6cyl 3.0 2wd Manual Trans.

bearings inside the Trans might be bad

Does it grind at all when shifting?

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff

No issues shifting, it changes gears pretty smooth

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2001 6cyl 3.0 2wd Manual Trans.

wrong.....

To get back on point, I doubt the fluid is whats making all the noise. Did you replace the pilot bearing?

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2004 4.0 4x4 5spd xlt with 175k 4.10 axles, extended cab, cranked t-bars (not maxed), painted black interior, 32x11.5x15 bfg a/t and procomp steel rims
60/40 mod with a shorty console

Throw out bearing = pilot bearing

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2001 6cyl 3.0 2wd Manual Trans.

no....

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95 Ranger XLT 4x2 2.3 I4 5 speed 206,000 *dead*
96 Ranger XLT 4x4 4.0 V6 5 speed 173,000 *alive*
D35 front, 8.8 rear, 3.73 gears, limited slip rear diff