SVT Loki
Veteran CEG'er
5.5 pints/2.75 quarts?
00-1-9 M/T-MTX75 New Fluid/Service Tip
Fluid/Service Tip
Article No. 00-1-9
01/10/00
TRANSAXLE-MTX-75-NEW TRANSAXLE
FLUID-SERVICE TIP
FORD: 1995-2000 CONTOUR
MERCURY: 1996-2000 COUGAR, MYSTIQUE
ISSUE
Several internal changes have beem implemented on the MTX-75 transaxle to improve shift efforts. These changes have resulted in the need for a new synthetic transmission fluid for ALL sevice operations.
ACTION
Use only the new fluid when performing any service on Cougars and Contours/Mystiques built after January 1, 2000. Refer to the following for additional details.
A new synthetic fluid is required when topping off the fluid level or whenever the transmission is being repaired or replaced in service in vehicles built after January 1, 2000. This new fluid(XT-M5-QS(1L/quart)) can easily be identified by its "honey" color as opposed to the reddish fluid used previously. The new synthetic fluid(XT-M5-QS(1l/quart)) is fully compatible with earlier (1995-2000 model year) Transaxles and fluid. It is recommended that this new synthetic fluid (XT-M5-QS(1L/quart)) be used exclusively in all model year MTX-75 transaxles when filling a fully drained unit, or when topping off a low fluid level.
PART NUMBER PART NAME XT-M5-QS Transaxle Fluid (1L/quart)
This is a copy of the Ford TSB concerning their recommedation for which transmission fluid to use. In speaking with Terry Haines, who I believe knows as much as anyone about these transaxles, he emphasized that only 'golden honey' should be used to minimize any potential shifting problems that seem to occur with other fluids. Based on these recommendations, I changed to the Ford fluid when I first got the SVT, as I was experiencing some stiffness in shifting. The balkiness/hesitation in shifting gears disappeared immediately and has not returned, even in what passes for cold down here. Nowhere in this TSB or from any other source have I seen another fluid recommended for exclusive use in these trannys.
The questions as to which fluid is recommended is answered in the TSB. What you choose to use is up to you. And why not use 5W-20? If you change your oil and filter regularly, it will do the job, give you less rotating friction when the engine is running, and better oil flow during startup.
The last part is not true. Both have a cold rating of 5, which means up to 100-150 degrees F, they have the same flow characteristics.
5w20 is thinner when HOT.
Ford switched to 5w20 to meet increasingly stringent CAFE guidelines. By recommending the thinner oil, they were able to marginally increase fuel efficiency throughout its product line, and still ensure adequate lubrication that will provide a reasonable service life. Of course, all that means to them is it will outlast the warranty.
I live in NJ where temperatures range from about 15 degrees on the coldest days of winter to the mid 90s in July, and I use 0w30 year round in all my cars. It provides the best startup lubrication because of its low cold viscosity, and when warm, it acts like any other 30 weight oil. 0w40 is also something i would consider.
I did the Fill till ya Spill then plug it up is the best way to do it! Thats the way I did it and Im loving the car!
- amyn