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Discussion Starter #1
I was talking to a guy that works at oriellys the other night and he asked if I had checked the transmissin fluid in my car since I bought it last year and I haven't so he started looking around under the hood and I mentioned that it was a 5 speed So he said I have to raise it up and get under the car to check it Should I just take it to the local ford shop and get it serviced? Or is it a simple thing to do?
 

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Pain in the back and messy, even if you have a rack. If your not ready to teach the neighbors new swear words, you might just take it in for a fluid drain and fill. Check into a good sythetic fluid, you can take in for them to install. It should be about the last time you have to mess with it. :laugh:
 

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It's not difficult if the car is on a lift, jack stands would be a PITA.. I use a conventional ATF in my T-45
 

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I change the transmission fluid in my T-45 transmission
with my mustang on jack stands and it's pretty easy.
I use synthetic Mobil 1 ATF in my T-45 transmission and
I never had a problem.Using synthetic ATF my T-45
transmission it seems to run quieter and smoother.
 

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96 Cobra

Hi

It seems like there is so many different trany fluid you can put in a T-45.

I`m planning on changing my oil in about 2 weeks so I was doing some research on the forum and some say Royal Purple... Some Mercon, MerconV (Dont know what is the difference between Mercon and Mercon V??) Penzoil...

What are you T45 owners using as Trany fluid? Just want to make sure not to mess up my trany and want to have the best performance from it.

Thanks,
 

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Discussion Starter #6
I'm probably going to go with royal purple when I change mine again Ive heard nothing but good from their products
 

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Hi

It seems like there is so many different trany fluid you can put in a T-45.

I`m planning on changing my oil in about 2 weeks so I was doing some research on the forum and some say Royal Purple... Some Mercon, MerconV (Dont know what is the difference between Mercon and Mercon V??) Penzoil...

What are you T45 owners using as Trany fluid? Just want to make sure not to mess up my trany and want to have the best performance from it.

Thanks,
You can run any conventional or synthetic ATF transmission fluid.
I would run Mobil 1 synthetic ATF it's a great quality oil to use.
Penzoil is probably the worst oil you could possibly use.I seen
online oil tests on Penzoil and they come in dead last always.
I would never use Penzoil in my mustang.
 

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I still have the factory fill on my trans, with over 150K miles I've never had any issue with my t45 or fluid...why fix something that isn't broken? Lots of threads on guys having problems after messing with the fluid. Leave well enough alone and tell the O'reilly guy to mind his own car.
 

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I've used RP ATF in all of my mustangs with zero problems. Always did it my self and easy to do. The easiest way is to drain it, put the plug back in, then go inside the car and remove the shifter, pour the fluid in that way instead of trying to pump it back into the fill hole on the transmission.
 

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You can run any conventional or synthetic ATF transmission fluid.
I would run Mobil 1 synthetic ATF it's a great quality oil to use.
Penzoil is probably the worst oil you could possibly use.I seen
online oil tests on Penzoil and they come in dead last always.
I would never use Penzoil in my mustang.
Motor oil and their Tranny fluid are two different things, the Pennzoil Synchro-Mesh as actually the BEST you can use for the T-56 6 speed and it's recommended by Tremec, well actually they say use GM
Synchro-Mesh which is made by PENNZOIL!
 

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Discussion Starter #11
I just thought freshening up the fluid would help the transmission. I mean i dont really know if its normal or not considering its my first car but lately everytime i try to put her in reverse it makes a small grinding noise like the clutch isnt pushed in even though it is. Also it feels like over the past year there has been a little more resistance between gear changes. And i was thinking of going with a Pro 5.0 short throw soon.
 

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to alleviate that grinding going into reverse put it in 2nd first, that will solve that problem!:bigthumbsup
And YES get that stock crappy shifter outta there!
 

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Syncromesh!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Listen to brutal on this one, while I had everything apart and the tranny off, in went the syncromesh and i kid you not, this bad boy shifts with no effort, almost feels like I am cheating.
 

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I just thought freshening up the fluid would help the transmission. I mean i dont really know if its normal or not considering its my first car but lately everytime i try to put her in reverse it makes a small grinding noise like the clutch isnt pushed in even though it is. Also it feels like over the past year there has been a little more resistance between gear changes. And i was thinking of going with a Pro 5.0 short throw soon.
Most likely your clutch is not fully releasing. this is a VERY COMMON problem. It sounds like yours is in the early stages of becoming a problem. I am basing this on the increased resistance between gear changes. You will notice it first as an increased trendency to scrape in reverse. Select a synchronized gear first to stop things from rotating internally before selecting reverse as was mentioned earlier, but if that doesn't do it completely, the clutch is dragging.

I just shake my head when I read posts like this where the answer to anything about a T5 (or T45) is to change the fluid to <insert your favorite name here>... Indeed there are lots of good choices out there. The truth is almost anything except gear oil will be fine.

Change that fluid regularly. It is cheap! I can tell when I open up a T5 (or any other) if the fluid has been changed. It will be clean inside and can usually be rebuilt reasonably. Those that have not been cared for will need one of EVERYTHING to put it back in shape.

If someone has 150,000 miles on their original ATF, DON'T change it. You will loosen up all that sludge that is holding it together. Just finish it off and replace the transmission when it gives out. It won't be much longer...

End of soap box rant. I'm stepping down now, and walking away...
 

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Discussion Starter #15
How much do you think a rebuild would cost? Something that would stand up to alot of horsepower and torque in the future?
 

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can you replace the tranny fluid when installing a new shifter? im looking at a short throw and have heard after draining out old fluid you can simply add the fluid in from the top once you are in there for the shifter. anyone done this?
 

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can you replace the tranny fluid when installing a new shifter? im looking at a short throw and have heard after draining out old fluid you can simply add the fluid in from the top once you are in there for the shifter. anyone done this?
Yes, lots of folks do it that way.

Another way is to run a small hose from the fill hole along the transmission and up the firewall to a funnel under the hood.

There are others too...
 
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