6 speed fluid

Reply Subscribe

Thread Tools

Search this Thread

Oct 14, 2007 | 11:35 AM

cobarjet

Thread Starter

Freshman User

Joined: Nov 2004

Posts: 44

Likes: 0

6 speed fluid

Need to change oli in the tranny looking for input on what fluid/oil to use in it

Oct 14, 2007 | 11:47 AM

F350-6

Post Fiend

Joined: Mar 2007

Posts: 26,966

Likes: 50

From: Texas

I've never had any trouble with the recommended ATF. Some prefer a synthetic. Royal Purple is a name that gets tossed around a lot.

Oct 15, 2007 | 11:08 AM

Fat Diesel

Logistics Pro

Joined: Aug 2005

Posts: 3,884

Likes: 180

From: Morgan Hill, CA

Mobil 1 Syn ATF is what i've put in the last three times. I've even tortured it to 235* without an issue.

Oct 15, 2007 | 11:34 AM

cgl

Posting Guru

Joined: Apr 2000

Posts: 1,345

Likes: 0

From: NorCal

Mobil 1 Synthetic ATF gets my vote.

Oct 15, 2007 | 03:55 PM

jtharvey

Lead Driver

Joined: Oct 2004

Posts: 7,413

Likes: 1

From: Columbia, MO

The manual tranmissions in these trucks use ATF? Seems like that would be too thin for a manual.

Oct 15, 2007 | 04:09 PM

F350-6

Post Fiend

Joined: Mar 2007

Posts: 26,966

Likes: 50

From: Texas

Quote:

Originally Posted by jtharvey

The manual tranmissions in these trucks use ATF? Seems like that would be too thin for a manual.

You would think so but they've been doing this for several years. It actually holds up well.

Oct 15, 2007 | 04:19 PM

jtharvey

Lead Driver

Joined: Oct 2004

Posts: 7,413

Likes: 1

From: Columbia, MO

Do you guys know of the new '08 trucks have the same manual trans in them and call for the same fluid? I've got a friend that owns one and wants to change his fluid, but the owner's manual only states Motorcraft Manual Transmission Fluid. Is this just rebadged ATF? Seems it would be easier for them to just spec ATF in the manual.

Top 10 Ford Truck Tragedies

Joe Kucinski

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

Brett Foote

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Michael S. Palmer

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Verdad Gallardo

10 Best Ford Truck Engines We Miss the Most!

Joe Kucinski

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Brett Foote

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Michael S. Palmer

10 Most Surprising 2026 Ford Truck Features!

Joe Kucinski

Top 10 Ford Trucks Coming to Mecum Indy 2026

Brett Foote

5 Best / 5 Worst Ford Truck Wheels of All Time

Joe Kucinski

Oct 17, 2007 | 09:47 AM

cgl

Posting Guru

Joined: Apr 2000

Posts: 1,345

Likes: 0

From: NorCal

Quote:

Originally Posted by jtharvey

My 02 manual uses ATF. The 08 specs:
Manual transmission fluid
5.8 quarts (5.5L) Motorcraft Full Synthetic Manual Transmission Fluid
Ford part number : XT-M5-QM / WSS-M2C200–C

What the difference is, I don't know.

Oct 17, 2007 | 10:55 AM

#10

03_PSD

Postmaster

Joined: Nov 2006

Posts: 4,196

Likes: 0

how much fluid do the zf6's hold?

Oct 17, 2007 | 11:26 AM

#11

Izzy351

Post Fiend

Joined: Feb 2007

Posts: 14,541

Likes: 2

From: Dallas-Ft. Worth

Quote:

Originally Posted by F350-6

You would think so but they've been doing this for several years. It actually holds up well.

Yep -- my '84 Mustang's T5 had ATF in it. I converted to 75W-90 syn gear oil, then broke it. Twice. It wasn't the oil's fault though. I was racing it both times --2nd gear in those things were very fragile. That's why I swapped it to a C6 with the bored 351W...