2007 Ford Fusion

[millerbl00]

An update on my 2007 Ford Fusion with 45k miles rough shifting.
Decided to try Castrol Multi Vechile import since I have the FRN5 transmission. It was cheap and for sale locally and met the M-V spec. Ran a 10 quart flush. It is MUCH better now, especally cold.

Thanks to everyone for the advice.

 

[CharlieJ]

If you have the 5 speed automatic, that transmission is known to be hard on fluid.

 

[brandini]

Yes, and in my Mazda6 the OM says to flush every 30K.

 

[exranger06]

I thought Fusions use Toyota T-IV fluid, since its an Aisin Warner trans. Although Castrol Multi-vehicle meets T-IV too, so I guess it's a non-issue.

 

[willix]

Some of these newer transmissions seem to be very sensitive to the fluid you run in them. Using a multi-application fluid may be a mistake. I don't know but wouldn't want to find out the hard way.

 

[exranger06]

Apparently FNR5s use their own special fluid: http://www.fordparts.com/Products/Chemicals-TransmissionFluids.aspx

 

[cos]

millerbl00,

Good to know, I have a few friends with 4 cyl, 5 speed auto Fusions.

 

[millerbl00]

I have the 5 Speed, It uses FNR5 which Castrol Multi-vehicle Import meets the spec. The factory fluid shifted very rough.

The 6 speed uses another type fluid.

So 5 Speed = FNR5 = Castrol Multi-vehicle Import = Amsoil = Mobil One ATF and a few others.

So 6 Speed = Toyota T-IV or Ford Spec or ??

 

[exranger06]

No, the "Motorcraft premium automatic transmission fluid" (scroll further down the page on that link) is the Toyota fluid. FNR5 fluid is apparently different.

 

[cos]

The 6-speed auto uses Toyota T-IV.

 

[badtlc]

Originally Posted By: brandini
Yes, and in my Mazda6 the OM says to flush every 30K.


You got a weird OM, then. Mazda says the M-V fluid in the FNR5 is a lifetime fluid and requires no maintenance.

 

[millerbl00]

Check out my UOA at 39k. It was pretty bad for "lifetime".

 

[badtlc]

Originally Posted By: millerbl00
Check out my UOA at 39k. It was pretty bad for "lifetime".


I don't doubt it. I change mine at 50k intervals but the manual most definitely does not say to change it at 30k intervals.