Mercon III vs Mercon V
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Logistics Pro
Joined: Jul 2009
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From: Lansdale, PA
Mercon III vs Mercon V
So now I'm rethinking the whole mercon v in my transmission. Is mercon v absolutly nessisary.
I went to buy mercon v at advance and the guy behind the counter (guy I know) asked what I was using it in. I said my diesel and he said that mercon 3 will work fine. He said when he swapped the fluid in his 2000 v10 that he was told by the transmission shop to use mercon 3 but ford reccomends using mercon v. But ford tells you to put mercon v into EVERY transmission.
Is mercon v required for the 4r100.
I know all the big diesel trans shops reccomend the mercon v but will mercon3 work.
I went to buy mercon v at advance and the guy behind the counter (guy I know) asked what I was using it in. I said my diesel and he said that mercon 3 will work fine. He said when he swapped the fluid in his 2000 v10 that he was told by the transmission shop to use mercon 3 but ford reccomends using mercon v. But ford tells you to put mercon v into EVERY transmission.
Is mercon v required for the 4r100.
I know all the big diesel trans shops reccomend the mercon v but will mercon3 work.
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Logistics Pro
Joined: Jul 2009
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From: Lansdale, PA
Was mercon v around back in 99-03 when these transmissions were in their production heyday behind the 7.3 engine. What fluid actually came "stock" in these transmissions.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
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From: Grand Lake, La.
There was never a Mercon 3, only Mercon. There was Dexron III/Mercon. Ford had Mercon change the formula of Mercon-V so we can use it in our trans. I don't think they make Mercon now, only Mercon-V.
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Logistics Pro
Joined: Jul 2009
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From: Lansdale, PA
its dextron3 not mercon.
what about using the mercon/dextron3 fluid in our transmissions. Id really like to spend 20 dollars for a case of oil vs walmart supertec at $45 and napa brand for 60+
My OA came back that I have a lot of DIRT in my fluid, and that I need to change it IMMEDIATLY. I was thinking about removing the pan and cleaning out the sludge, and then putting it back together, and doing the quick flush. Then drive it some, and then do it all over again but replace the filter, add my 6liter cooler, and an external filter also. I think I can get royal purple fluid for under $5 a quart, but I didnt get a reply back a while ago wether or not RP fluid is ok to use. The bottle says it is mercon v compatible/rated but I didnt get any concensus on if it was not reccomended.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Bugger, yup.
its dextron3 not mercon.
what about using the mercon/dextron3 fluid in our transmissions. Id really like to spend 20 dollars for a case of oil vs walmart supertec at $45 and napa brand for 60+
My OA came back that I have a lot of DIRT in my fluid, and that I need to change it IMMEDIATLY. I was thinking about removing the pan and cleaning out the sludge, and then putting it back together, and doing the quick flush. Then drive it some, and then do it all over again but replace the filter, add my 6liter cooler, and an external filter also. I think I can get royal purple fluid for under $5 a quart, but I didnt get a reply back a while ago wether or not RP fluid is ok to use. The bottle says it is mercon v compatible/rated but I didnt get any concensus on if it was not reccomended.
its dextron3 not mercon.
what about using the mercon/dextron3 fluid in our transmissions. Id really like to spend 20 dollars for a case of oil vs walmart supertec at $45 and napa brand for 60+
My OA came back that I have a lot of DIRT in my fluid, and that I need to change it IMMEDIATLY. I was thinking about removing the pan and cleaning out the sludge, and then putting it back together, and doing the quick flush. Then drive it some, and then do it all over again but replace the filter, add my 6liter cooler, and an external filter also. I think I can get royal purple fluid for under $5 a quart, but I didnt get a reply back a while ago wether or not RP fluid is ok to use. The bottle says it is mercon v compatible/rated but I didnt get any concensus on if it was not reccomended.
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Logistics Pro
Joined: Jul 2009
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From: Lansdale, PA
Direct quate off my Schaeffer OA
" silicon (dirt, sand) high: see reverse side of form. iron: gears, discs, housings, bearings, pumps, pto. oil should be changed, resample to establish trends "
Granted, my truck has over 230k on it, and im sure it is the original fluid, it sure looks used up to me, its near black and smoky looking. Gotta get it changed soon.
I may flush it (after dropping the pan and cleaning the sludge out) with merc/dex3 fluid, and then go get some Royal Purple fluid. My buddy at advance said he can give me a deal on 2 cases, somewhere around $4 a quart.
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Joined: Oct 2006
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From: Albuquerque, NM
Look, even at $4 a quart it takes 20 quarts to completely flush the tranny, torque converter, etc. That's $80. Go to an oil change place and have them flush it for $100. For $20 more then you can purchase the fluid they will hook it up to a machine that runs 20 new quarts in and 20 old quarts out to a recapture tank. No mess, no getting rid of the old fluid, etc. Just my 2 cents worth. Its all Merc V now, reformulated like Miller said to meet the OEM specs for the 4R100
Rather Be Floatin
Joined: Oct 2005
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From: Marble Falls, Tx.
When I was having some tranny issues and talked to Brian at BTS he told me after I replaced my bad seal I could do a flush and fill and use dextron 3 (because it was cheap)without any ill effects. I only have 20k with the dextron 3 but haven't experienced any problems yet.
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Joined: May 2004
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From: Central Coast of CA
You can still buy Dex III/Merc, but like Mark K told to me: "Ford and GM no longer license Dexron III/MERCON. Nobody is watching what's in them. MERCON V is licensed by Ford so there is some monitoring the fluid."
That's good enough for me!
Merc V or a syn based equivalent is the only thing that will go into my trans.
Stewart
That's good enough for me!
Merc V or a syn based equivalent is the only thing that will go into my trans.
Stewart
Elder User
Joined: Feb 2008
Posts: 568
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From: Irwin,Pa
I just talked to Brian at BTS the other day about my tranny issues & he told me the same thing.. to flush it out with cheap dexron III... I have 3 jugs of this at home ready to flush out my tranny this weekend
Traveller ATF Dexron III/Mercon Transmission Fluid, 2 gal. - 0831134 | Tractor Supply Company
Traveller ATF Dexron III/Mercon Transmission Fluid, 2 gal. - 0831134 | Tractor Supply Company
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Logistics Pro
Joined: Jul 2009
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From: Lansdale, PA
Look, even at $4 a quart it takes 20 quarts to completely flush the tranny, torque converter, etc. That's $80. Go to an oil change place and have them flush it for $100. For $20 more then you can purchase the fluid they will hook it up to a machine that runs 20 new quarts in and 20 old quarts out to a recapture tank. No mess, no getting rid of the old fluid, etc. Just my 2 cents worth. Its all Merc V now, reformulated like Miller said to meet the OEM specs for the 4R100
See, the problem I have with this is that for the 100$ they will not pull the pan and wipe the crud off the bottom or replace the filter. If all you do is flush it, then the crud in the pan will just dissolve in the new fluid and now your contaminated again, or like most transmissions with high miles.. Fail. And doubtful they will even use mercon v.
I understand what your getting at, but not something I'm likely to do. I'd rather do it myself and put in a quality fluid and deal with disposing the oil.