GearHead5Point0

I want to apologize because I know this topic has been discussed greatly, I've read the threads available, but I just want to personally share my question and what I'm finding with my Mustang, if you guys don't mind.

I drive a new 2012 Mustang GT RS1, MT-82 6-Speed Manual, with only 146 miles on the odometer. The starting build date is 9/26/11, and the finished build date is 10/14/11.

So, I've had the car for 30 days, and I've noticed that shifting into gears 1,2,3, and 4, and occasionally 5,6...pretty much all the gears, is a bit rough and notchy. This is my first car, and its making me very nervous because of all the disaster stories I've heard on the forums. This is not only when its cold either, I ran the car for an hour today, and even throughout the ride, it pretty much remained rough and notchy. . I'm not being locked out of certain gears, but still, its pretty stiff/rough/notchy to get into gear.

So...what should I do from here? Exactly how "common" is this among Mustang owners? Some tell me its not so common, others inform me that it is very common. I'm a bit nervous, because from my understanding, Ford has no real fix for this, so I'm worried that I'm pretty much stuck with this problem, and even worse, could even progress to more severe problems.

If anyone is experiencing this problem, did you guys find any fixes? How was the problem fixed?

I'm sorry for another "MT82" thread, I know there are many, it was just really bothering me

Thanks everyone, please help if you can

Also don't forgot to vote in the poll, just so i can get an idea of how "widespread" this notchy shifting really is, thanks!

99gtstang

Take it in I believe there's a TSB on the 12 models. I am having a tough time being blocked out of 3rd and 4th with WOT..OR, I am not doing something right.... Anyone else run into this? It makes me feel like a goober, lol.

Enochius

I just now hit a 1,000 miles on 2012 gt and sometimes second gear is a nightmare to get into

dominant1

Change your tranny fluid to this:







And get an MGW shifter to replace the cheap stock shifter, you will be amazed at the difference.





PRODUCT DESCRIPTION
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in demanding manual transmission and transaxle applications where an extreme-pressure GL-4 gear lube is specified, including those where high-horsepower/high-torque engines and towing or heavy loads increase transmission stress.

AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube helps prevent the thinning effects of mechanical shear. It is formulated to maintain its viscosity and superior film strength for consistent, long-lasting wear protection. Synthetic Manual Transmission & Transaxle Gear Lube excels in hot and cold temperature extremes that exceed the limits of conventional mineral oils. It protects against rust, keeps seals soft for long life and is compatible with brass synchros for smooth synchromesh shift quality.

Ideal for NV-4500 Transmissions
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a thermally stable, extreme-pressure formulation that resists heat, oxidation, acid build-up and varnish. It is the ideal gear lube for high-temperature applications, including the New Venture NV-4500 transmission, which retains heat due to its cast iron housing and is often subjected to heavy loads and high torque from turbodiesel engines.

AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is the replacement fluid for GM part #12346190 and Chrysler part #4874459 (Chrysler specification #MS-9070).

Ideal for Muscle Car Transmissions
The extreme-pressure design of Synthetic Manual Transmission & Transaxle Gear Lube reduces friction, heat and wear. It withstands the high horsepower and quick shifts common to muscle cars equipped with large-displacement engines.

Ideal for Front-Wheel Drive Transaxles
The advanced synthetic formulation provides superior protection for gears and bearings in front-wheel-drive transaxles.

Excellent for Service Centers
AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube is a versatile transmission and transaxle lubricant. It reduces inventory needs, is readily available and is cost-effective compared to vehicle OEM-branded products.

Performance Features

• Reduces friction, heat and wear
• Superior high temperature stability
• Resists heat, oxidation, acid build-up and varnish
• Lasts two times longer than conventional petroleum oils
• Improves cold-weather shifting

Applications
Recommended for synchronized manual transmissions and transaxles that require 75W-85, 75W-90 or 80W-90 viscosities and any of the following performance specifications: API GL-4 and MT-1, ZF TE-ML 02B, 16A, 17A and 19A, Chrysler MS-9070 and MAN 341 ML. Recommended for use in NV-4500 transmissions, and replaces GM part #12346190 and Chrysler part #4874459.

Meets GL-4 performance specifications required by some models of Acura, Hyundai, Infiniti, Kia, Land Rover, Lexus, Mazda, Mitsubishi, Nissan, Subaru, Suzuki, Toyota, Volkswagen, Hino Mitsubishi-Fuso, and Zetor.

Ideal for muscle car transmissions such as Muncie, Borg Warner, Saginaw, Ford Toploader, Dearborn and New Process. Also recommended for Gear Vendors Gear Splitters.

Service Life
Under normal operating conditions AMSOIL Synthetic Manual Transmission & Transaxle Gear Lube last two times longer than conventional petroleum GL-4 gear oils. Where the original equipment manufacturer (OEM) recommends synthetic oils, follow the OEM drain interval (such as NV-4500).

TYPICAL TECHNICAL PROPERTIES
Synthetic Manual Transmission and
Transaxle Gear Lube 75W-90 API GL-4 (MTG)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
14.8
Kinematic Viscosity @ 40°C, cst (ASTM D-445)
88.4
Viscosity Index (ASTM D-2270)
176
Flash Point, °C (°F) (ASTM D-92) 150°C Min.
206 (403)
Pour Point, °C (°F) (ASTM D-97)
-46 (-51)
4-Ball Wear Test (ASTM D-4172B @ 40 kg, 75˚C, 1200 rpm, 1hr), Scar, mm
0.45
Brookfield Viscosity @ -40°C
46,005
Foam Stability (ASTM D-892) (20/50/20)
0/0/0
Copper Corrosion (3 hr, 121°C) (ASTM D-130)
1B

shoeys08dkcandygt

My '12 has 16k miles on it and has always shifted like a hot knife thru butter. take the car to Ford

Entaille

I had to have Ford change out my trans fluid via TSB .. it helped a little. in the cold it still acts up in 1st to 2nd and 2nd to 3rd. feels a bit rough is all - but it goes in just fine.

Two5.0's

I purchased my 2012 Mustang GT premium the end of October,2011. At 500 miles I started having the rough shifting between 1st and 2nd. Ford changed the tranny fluid and said it will still do it when it is cold. Well, it is still doing it first thing and we are having morning temps in the 60's. It does it bad until it is driven for a while and then it isn't as bad or not at all. Going to keep driving it till it gets really bad and take it back for the 3rd time.

GearHead5Point0

I'm still undecided on weather to bring it down to Ford for the 11-3-18 TSB, as some claim that it fixes there notchy shifting, and others claim that it had no effect, and rather, developed "gear whine" within there transmission, to make things worse.

GearHead5Point0

The problem I seem to be having is that not only is it "notchy" from the start, but as time progresses throughout the ride, it still remains "notchy". It's also very inconsistent too. Some shifts will feel butter smooth will little effort to slide in, I'll throw it in neutral, then back into the same gear just to see, and once again, notchy.

GearHead5Point0

When you say, "its a bit rough is all", are you referring to it when the car is cold and has just started up, or throughout the entire ride, cold and warmed up?