I did find that Ford is saying the MERCON V is compatible with the Mercon and now the only ATF
they recommend for previous Mercon applications.
It seems to bother people that Ford flipped their posion on this a few years ago. Understandably, this is confusing. I can only speculate why this happened. Some think the formulation changed. I read a lot in the past few days on this and I have not seen anything objective that suggests this. Some Other ATF
MFG say they meet the Mercon V spec but are not certified by Ford to carry the Mercon Certification. I believe the Valvoline High Milage is one. Note there is a distinction in meeting/exceeding the spec and having certification by the spec owner. The former is the manufacturer saying saying so and the latter is the company owning the tradmark or spec agreeing with them. It likely comes down to politics and money.
I have also seen enough anecdotal endoursements from folks who have used the Super Tech, Valvoline and Castrol Mercon V that say it worked fine.
I found a good price on Castrol Mercon V at Advance Auto. Buy on line and PU at local store. You can use a coupon code online to get an additional discount.
Thanks to all who shared.
My '01 Sable came with "V" as per the manual. I changed fluid/filter at 111K miles. It was not all that bad in the pan. I could see a difference in shifting. The 2-3 shift had been letting the rpm
run up just a tick during the shift and TQ lockup was so smooth it was hardly notice, except for rpm
After changing, the shifts are crisper, and the TQ lockup is sharp. I like that.
I cringe at the thought of TQ shudder. Been there done that in Essex with sloppy trans. Four of them.
I used Walmart fluid, "V".
Also did the same for my '03 but the difference was not so much. ~84K miles and the filter inside was dated "03" so it was original.
I see no reason to pay more for what I cannot see or feel.
There is some info not to mix types, but, that is not quite possible. But as for me, my 3 old Fords all came with "V" so no issue.
And this, I am sure going over 100K on original fluid is not the best, but mine is a local hauler and not a high priority. The engine and tranny will outlast the body in the rust belt.