Transmission fluid
Hotshot
Joined: Jun 2015
Posts: 12,879
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Impossible to know since you didn't say what transmission is in your truck. It could either use gear oil or Mercon ATF. A 2 x 4 is a board size. A 2wd drive is a 4 x 2.
Not to sound like a tool bag but there are probably dozens of threads on this topic.
Not to sound like a tool bag but there are probably dozens of threads on this topic.
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Freshman User
Joined: Sep 2015
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Oops! My bad.. Yes it is a 4x2 and I believe 5 speed automatic.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
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From: Mexico, Missouri
4-speed Automatic?
Or 5 speed manual?
If it is an Automatic, C-6, E4OD, then it's regular Mercon/Dexron.
Mazda 5spd get regular Mercon/Dexron. I'm unsure of the ZF.
I believe anything older than mid 80's got gear oil.
Or 5 speed manual?
If it is an Automatic, C-6, E4OD, then it's regular Mercon/Dexron.
Mazda 5spd get regular Mercon/Dexron. I'm unsure of the ZF.
I believe anything older than mid 80's got gear oil.
Senior User
Joined: Nov 2013
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87 F150s never had a a 5 speed automatic. If it's automatic, it's either a 3 speed or 4 speed. Either way, regular Mercon is the stuff to use. GM used the same stuff, but they called it "Dexron III." That's why a lot of the bottles will say "Dexron III/Mercon."
Mercon V will also work, as it supersedes regular Mercon.
Mercon V will also work, as it supersedes regular Mercon.
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Freshman User
Joined: Sep 2015
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I just got the truck so I don't know much about it. Noticed the tranny fluid is low and it doesn't always wanna shift into drive without revving it up alittle bit. It's a automatic and I'm pretty sure it's a 4 speed. So the merc on/dexron is what I should use? Any other recommendations for checking it? I know your supposed to drive it for alittle bit then check it.
Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
According to an AllData TSB the recommended fluid is now Mercon V. Standard Mercon will work but at my job I always recommend Mercon V in these sorts of situations.
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Lead Driver
Joined: Feb 2002
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From: Greater Austin, Texas
The problem I see with your recommendation is that Mercon V is about 50% more expensive than Mercon.
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Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
Good luck with that. It will kill your transmission.
MERCON V is the right fluid. MERCON will work, but MERCON V is superior to MERCON.
MERCON V is the right fluid. MERCON will work, but MERCON V is superior to MERCON.
Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
That's actually not true. Go to Kragen/Oreilly and look at their Dex/Merc fluid. That stuff meets several different specs, and it will cover the MERCON spec. Not that I would use that stuff anyways, but you get my point.