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Tranny Fluid-Did I screw up?

Andy G

Member
Joined
January 1, 2005
Messages
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City, State
Southaven Ms
Year, Model & Trim Level
99 Explorer
Hello Guys

I dropped the transmission pan today and changed the filter on my 5R55E.
I refilled it with Castol Mercon/Dexron.
I checked the owners manual and it showed "Mercon" as the trans fluid.
While I was refilling it I noticed the dipstick stated "Mercon V". I went back to the owners manual and in some places it says "Mercon" and in others it says "Mercon V" for the transmission fluid.

So Did I screw up putting in plain Mercon? Do I need to flush it out for Mercon V?

Thanks
Andy
 




Carguy3J

Explorer Addict
Joined
June 21, 2008
Messages
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City, State
North East New Jersey
Year, Model & Trim Level
'99 4dr. XLT SOHC A4WD
Do not drive it! Change it now!

Oh yeah, you screwed up big. DO NOT DRIVE IT WITH THE DEX/MERC!!!! :nono:You will fry your trans:dead:. Drain it, and refill with Mercon V, or a Synthetic fluid that states it meets or exceeds the requirements for Mercon V, such as the Mobil 1 synthetic ATF.
 




Andy G

Member
Joined
January 1, 2005
Messages
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City, State
Southaven Ms
Year, Model & Trim Level
99 Explorer
Damn! Thanks I'll do it first thing tomorrow.

Andy
 




SoNic67

Explorer Addict
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January 24, 2010
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City, State
Newport News, VA
Year, Model & Trim Level
2001 V8 (Eddie Bauer) AWD
Hope that you didn't started it, so the new fluid is only in the transmission pan, not in the torque converter or cooler or cooler lines! Otherwise you will need to drain those too...
 




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