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Old Jan 15, 2006 | 09:37 PM
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Question Mercon 5

I have heard recently that Mercon 5 is not recommended for E4ODs'. I have that in my tranny, complete flush last summer. Anyone recommend anything but expensive synthetic? I also added a large oil cooler to the front of the radiator at the same time.
 
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Old Jan 15, 2006 | 09:38 PM
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mercon v is never to be used in the superdutie trucks. they use mercon. mercon v can cause extensive damage. mercon is dirt cheap.
 
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Old Jan 15, 2006 | 09:44 PM
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mercon 5

Did not know this, I will drop that oil/filter before running again. Mercon 5 is a blend of reg mercon and synthetic.
 
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Old Jan 15, 2006 | 09:46 PM
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it is a GP II/III base which is then friction modfied. the friction modifiers are whats bad for the trannies not made for mercon v. the entire tranny needs to be flushed to get rid of the mercon v.
 
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