auto transmission fluid? FMX or C6 tranny
#1
auto transmission fluid? FMX or C6 tranny
How do I identify my Tranny and Type of fluid to use?
I'm confused. I have a 1975 F350 RV w/ 460.
My automatic tranny was leaking from the pan gasklet. Should be an easy fix. Drop the pan and change the gasket.
In the past I have been told to use type F in older Ford trans.
The Haynes manual I have has confused me.
I thought I had a C6 tranny. no overdrive
Haynes Manual Ch 7B "...C6 for all other V8 engines. The FMX was installed on some F350 Vehicles until 1978.
Here is why I am confused
Haynes Manual Ch 1 -Reccomended fluids -
C6 = Dexron lll or Mercon
all others type F
I'm confused. I have a 1975 F350 RV w/ 460.
My automatic tranny was leaking from the pan gasklet. Should be an easy fix. Drop the pan and change the gasket.
In the past I have been told to use type F in older Ford trans.
The Haynes manual I have has confused me.
I thought I had a C6 tranny. no overdrive
Haynes Manual Ch 7B "...C6 for all other V8 engines. The FMX was installed on some F350 Vehicles until 1978.
Here is why I am confused
Haynes Manual Ch 1 -Reccomended fluids -
C6 = Dexron lll or Mercon
all others type F
#2
#3
Thanks, that's a relief. I bought 10 qt of Type F "Castrol" yesterday and a gasket.
I guess if I really want to know more about the FMX that was mentioned in the manual I'll start another thread . Another day.
I just found this info in an old thread.
I guess the Haynes Manual writers had a little to much to drink that day.
I guess if I really want to know more about the FMX that was mentioned in the manual I'll start another thread . Another day.
I just found this info in an old thread.
I guess the Haynes Manual writers had a little to much to drink that day.
Click here: Havoline Mercon V
I couldn't cut 'n paste the url from the adobe file. In case you don't have Adobe 6.0, here's what it said:
Havoline Automatic Transmission Fluid MERCON V is
designed specifically for use in Ford Motor Company
transmissions that require a MERCON V fluid. The
enhanced properties of the MERCON V specification
offer premium performance in MERCON or DEXRON-III
applications.
• Always check your owners manual to determine the
proper automatic transmission fluid for your transmission.
• Ford transmissions manufactured before 1977 and
some pre-1982 transmissions require a Type F fluid
such as Havoline ATF Type F.
• Chrysler transmissions manufactured after 1996
require either ATF+3® or ATF+4®3.
Havoline Automatic Transmission Fluid MERCON V
meets or exceeds:
• manufacturer's performance requirements
— Ford MERCON, MERCON V
— General Motors DEXRON-III
I couldn't cut 'n paste the url from the adobe file. In case you don't have Adobe 6.0, here's what it said:
Havoline Automatic Transmission Fluid MERCON V is
designed specifically for use in Ford Motor Company
transmissions that require a MERCON V fluid. The
enhanced properties of the MERCON V specification
offer premium performance in MERCON or DEXRON-III
applications.
• Always check your owners manual to determine the
proper automatic transmission fluid for your transmission.
• Ford transmissions manufactured before 1977 and
some pre-1982 transmissions require a Type F fluid
such as Havoline ATF Type F.
• Chrysler transmissions manufactured after 1996
require either ATF+3® or ATF+4®3.
Havoline Automatic Transmission Fluid MERCON V
meets or exceeds:
• manufacturer's performance requirements
— Ford MERCON, MERCON V
— General Motors DEXRON-III
#4
two part question
Part 1
If I presume that the C6 is original then Type F is the right fluid.
If the previous owner(s) had replaced or rebuilt it and it now requires Dex/Merc fluid, What bad thing will happen if I use Type F.
Part 2
I boughta Felpro gasket at Auto Zone. It is not cork like the one I took off. Might be a good thing.
It says do not use any sealant with this gasket. Is this a good gasket or is there something better
If I presume that the C6 is original then Type F is the right fluid.
If the previous owner(s) had replaced or rebuilt it and it now requires Dex/Merc fluid, What bad thing will happen if I use Type F.
Part 2
I boughta Felpro gasket at Auto Zone. It is not cork like the one I took off. Might be a good thing.
It says do not use any sealant with this gasket. Is this a good gasket or is there something better
#5
part 1
look at your dipstick tube does it say use type F? type f is similar to the fluid that is sold as trick shift for harder shifts so in a trans that wants mercon you'll see firmer shifts but in a trans that wants type f you might see some slipping
part 2
yeah that is a good gasket just be sure not to over tighten
look at your dipstick tube does it say use type F? type f is similar to the fluid that is sold as trick shift for harder shifts so in a trans that wants mercon you'll see firmer shifts but in a trans that wants type f you might see some slipping
part 2
yeah that is a good gasket just be sure not to over tighten
#6
Answer 1: Dex/Merc has a friction modifier...(it's more slippery). If you put it in a 76, it'll cause it to slip. If you put Type F in a 77, it will increase friction on the bands/clutches.....probably causing them to wear faster and/or shudder.
Answer 2: When you say sealant, are you referring to the stuff you squeeze out of a tube?? AKA RTV gasket maker?? Or, do you mean actual gasket SEALANT (the stuff in a spray can).
Answer 2: When you say sealant, are you referring to the stuff you squeeze out of a tube?? AKA RTV gasket maker?? Or, do you mean actual gasket SEALANT (the stuff in a spray can).
#7
Answer 1: Dex/Merc has a friction modifier...(it's more slippery). If you put it in a 76, it'll cause it to slip. If you put Type F in a 77, it will increase friction on the bands/clutches.....probably causing them to wear faster and/or shudder.
Answer 2: When you say sealant, are you referring to the stuff you squeeze out of a tube?? AKA RTV gasket maker?? Or, do you mean actual gasket SEALANT (the stuff in a spray can).
Answer 2: When you say sealant, are you referring to the stuff you squeeze out of a tube?? AKA RTV gasket maker?? Or, do you mean actual gasket SEALANT (the stuff in a spray can).
#1
I guess I'll find out. In 2 weeks I drive this beast to Phoenix and Back
#2 either one . I just want to to put this pan back on once with no leaks.
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#8
#9
#10
It does say use dry. I was just fishing for some tips and I got what I was looking for even though the answer was on the dipstick all this time.
I should change my name to "Dipstick"
I'm a regular user of a similar website "Jeepforum.com" and both have very knowledgeable and helpful people.
Now I have another site to burn my idle time with.
Thanks again
#12
Thread revival. I had a great trip. A few months after I got back the pan started leaking again. I hate leaks. It makes a mess on my driveway.
I used a torque wrench so I would not over tighten. I re-torqued the pan bolts again. It still leaks while just sitting there.
The hardest part about dropping the pan is removing and re-installing the frame cross member bolts.
any suggestions on better gaskets.
The pan just after I replaced it.
There is some minor leakage from the threads on this shift adjusting bolt I found before I changed the gasket.
and I have a small oil leak from the main rear seal on oil pan I presume, but that is also minor. It's making a mess in my drive way
I used a torque wrench so I would not over tighten. I re-torqued the pan bolts again. It still leaks while just sitting there.
The hardest part about dropping the pan is removing and re-installing the frame cross member bolts.
any suggestions on better gaskets.
The pan just after I replaced it.
There is some minor leakage from the threads on this shift adjusting bolt I found before I changed the gasket.
and I have a small oil leak from the main rear seal on oil pan I presume, but that is also minor. It's making a mess in my drive way
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