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mercon 3 or mercon 5

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Old Aug 11, 2004 | 11:50 AM
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03WHITELIGHTNIN's Avatar
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mercon 3 or mercon 5

which do I use on a 2003 L? Dealer told me today that I need mercon 5 but then told me that mercon 3 was in the service manual or something. So what do I need?
My dipstick says use mercon
 
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Old Aug 11, 2004 | 12:29 PM
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Re: mercon 3 or mercon 5

Originally posted by 03WHITELIGHTNIN
which do I use on a 2003 L? Dealer told me today that I need mercon 5 but then told me that mercon 3 was in the service manual or something. So what do I need?
My dipstick says use mercon
Your dipstick is smarter than your dealer..... use Mercon-Dextron III
 
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Old Aug 11, 2004 | 01:56 PM
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There is no such thing as MERCON III.

All 4R100s and E4ODs use MERCON

G
 
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Old Aug 11, 2004 | 02:23 PM
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Originally posted by Factory_Tech
There is no such thing as MERCON III.

All 4R100s and E4ODs use MERCON

G
I see that now. It is dextronIII, not mercon III.

thanks
brian
 
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Old Aug 11, 2004 | 03:12 PM
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Re: mercon 3 or mercon 5

Originally posted by 03WHITELIGHTNIN
which do I use on a 2003 L? Dealer told me today that I need mercon 5 but then told me that mercon 3 was in the service manual or something. So what do I need?
My dipstick says use mercon
Ask Rob 02. I understand he's an expert in the subject.
 
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Old Aug 11, 2004 | 03:14 PM
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Re: Re: mercon 3 or mercon 5

Originally posted by MaxTorque02
Ask Rob 02. I understand he's an expert in the subject.
LOL .... I remember that episode ./.
 
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Old Aug 11, 2004 | 03:15 PM
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Re: mercon 3 or mercon 5

Originally posted by 03WHITELIGHTNIN
which do I use on a 2003 L? Dealer told me today that I need mercon 5 but then told me that mercon 3 was in the service manual or something. So what do I need?
My dipstick says use mercon
Change the dealer not the fluid !!!
 
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Old Aug 11, 2004 | 05:00 PM
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Originally posted by Factory_Tech
There is no such thing as MERCON III.

All 4R100s and E4ODs use MERCON

G
You are right there is no such thing as Mercon III, however most everybody uses Mercon-Dextron III as pictured in the link below.

http://www.midwayautosupply.com/deta...ption.asp?2090
 
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Old Aug 11, 2004 | 05:01 PM
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Re: Re: mercon 3 or mercon 5

Originally posted by SVT_KY
Change the dealer not the fluid !!!
I'm with you....
 
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Old Aug 11, 2004 | 05:48 PM
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what everybody else said...

Mercon / Dexron III

on a related note, some trucks (like mine) came with the wrong dipstick from the factory!

read this old thread...

later,
chris
 
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Old Aug 11, 2004 | 06:17 PM
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Mercon 5 is for the regular F-150's with the 4r70w tranny. mercon/dexron3 is for the 4r100 in the lightning.
 
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Old Aug 11, 2004 | 06:25 PM
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So, I'm casually reading the thread, until I got to the part about the wrong dipsticks. Since I have an 03, with 1400 miles, I said to myself "Oh, sh..." and made a beeline for the garage.
Whew! There is fluid on the stick and it does say Mercon on it, but how do I know it is the right dipstick? An overfull tranny is not a happy tranny.
 
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Old Aug 11, 2004 | 06:32 PM
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Originally posted by kerno
but how do I know it is the right dipstick?
if it looks like this it's WRONG:




if it looks like this it's CORRECT:




later,
chris
 
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Old Aug 11, 2004 | 08:45 PM
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Re: Re: Re: mercon 3 or mercon 5

Originally posted by SVT_KY
LOL .... I remember that episode ./.
LOL......It read like War and Peace in french
 
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Old Aug 11, 2004 | 09:12 PM
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Re: Re: Re: Re: mercon 3 or mercon 5

Originally posted by Fast Gator
LOL......It read like War and Peace in french


did rob ever do anything about that?
 
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