Black MFT Fluid?
#1
Honda-Tech Member
Thread Starter
Black MTF?
Alright all you transmission experts. In all my experience I have yet to come across this so I need a little assistance.
5 speed manual AWD in an Element. All the shaft seals and o-rings started leaking at the same time. Drained the fluid and it came out black.
Started to disassemble the transmission and found all the rubber was swollen and puckered. The o-rings were so swollen they just fell out of their grooves.
As far as I know I am the last person to fill it with Honda MTF maybe 8-12 months ago and it hasn't been changed since.
Also noticed rubber crumbs under the collar where 6th gear would be on the main shaft. As well as oil and rubber deposits all over the case. All of the seals seem to be complete other than the chemical(?) damage.
Anyone ever see a failure like this?
5 speed manual AWD in an Element. All the shaft seals and o-rings started leaking at the same time. Drained the fluid and it came out black.
Started to disassemble the transmission and found all the rubber was swollen and puckered. The o-rings were so swollen they just fell out of their grooves.
As far as I know I am the last person to fill it with Honda MTF maybe 8-12 months ago and it hasn't been changed since.
Also noticed rubber crumbs under the collar where 6th gear would be on the main shaft. As well as oil and rubber deposits all over the case. All of the seals seem to be complete other than the chemical(?) damage.
Anyone ever see a failure like this?
Last edited by Ryanthegreat1; 08-07-2023 at 11:25 AM.
#3
Honda-Tech Member
Thread Starter
Re: Black MFT Fluid?
Yeah I think whatever the black is, rubber(?), is separating from the oil.
It still smells like MTF and it's not burnt smelling.
A real head scratcher. Maybe an oil change place added some snake oil on an upsell?
It still smells like MTF and it's not burnt smelling.
A real head scratcher. Maybe an oil change place added some snake oil on an upsell?
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#4
Honda-Tech Member
Re: Black MFT Fluid?
Never seen anything like that before either. I would crack that transmission open and clean all of the rubber out, replace all seals and O0rings and try again.
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#5
Honda-Tech Member
Thread Starter
Re: Black MFT Fluid?
Yeah no idea on this one.
Cleaned out all the sludge and inspected all the bearing surfaces. Amazing condition for 350k+ miles.
Put it back together with all new rubber bits and it shifts like butter.
Guess we will see what happens in a year.
Cleaned out all the sludge and inspected all the bearing surfaces. Amazing condition for 350k+ miles.
Put it back together with all new rubber bits and it shifts like butter.
Guess we will see what happens in a year.
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#9
Honda-Tech Member
Thread Starter
Re: Black MFT Fluid?
Everything looked brand new in there. All the synchros were sharp and the braking teeth were all sharp. Not even any shadowing on the bearing surfaces or synchro cones.
Actually had to believe it has 350k+ miles on it.
Actually had to believe it has 350k+ miles on it.
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