2003 V6 Mustang-where does the transmission fluid go? - Ford Mustang Forum

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post #1 of 5 (permalink) Old 11-14-2010 Thread Starter
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2003 V6 Mustang-where does the transmission fluid go?

my 2003 v6 needs transmission fluid (checked the dipstick), i'm no were near mechanically incline and i would assume it doesn't go in the dipstick tube so where??? my manual was stolen when my top was cut through some years back so i have no help there.

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post #2 of 5 (permalink) Old 11-14-2010
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what transmission is it

2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'
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post #3 of 5 (permalink) Old 11-15-2010
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I'll assume that you have an automatic because you said you checked the dip stick.

I just want to mention that you need to be sure that you checked the fluid level properly before you go adding more fluid. It must be done while the car is at operating temperature. I have a manual transmission, so I'm not sure of the exact procedure for the Mustang.

If you need a new manual one can be downloaded for free from the ford owners site:


Anyway, The fluid does go into the dip stick tube on most automatics. Add it in small increments, to keep from overfilling.

2004 V6 Coupe
CAI & full dual exhaust
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post #4 of 5 (permalink) Old 11-15-2010 Thread Starter
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to answer your question yes the 3.8L V6 full auto and appreciate the assistance, i actually purchased the haynes manual this morning but appreciate the link for the owners manual. you know even in the haynes manual it does actually say to add fluid in the dip stick tube? i guess they assume if your buying the manual u actually know what ur doing.lol thanks everyone
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post #5 of 5 (permalink) Old 11-15-2010
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Just wanted to add the actual procedure for checking tranny fluid on an automatic:
1) have the car at operating temperature (20 min drive)
2) park it but keep it running
3) with your foot on the brake, move the shifter through each gear, pausing on each one for a few seconds, then bring it back up through the gears in the same manner
4) now check the fluid level
5) add a little if necessary (small increments, as somebody stated) about 200mL each time. Most bottles are a full liter, so look for markings on the side.
6) repeat steps 3-5 until the appropriate level is reached.

IMPORTANT: look at your dipstick to find what ATF (auto tranny fluid) you should be using. Probably Mercon IV or V.

FLASH = 98 V6, chrome yellow, black & blue accents, 146k daily driver
POWER: divorced exhaust with glasspacks; BBK CAI, TB, UDPs; (shift kit in the garage)
STYLE: black headlights, black taillights, black grille, black hood pins, black window tint, blue hood & side scoops, blue billet fuel door, interior billet, 12000k HIDs
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