Synchromax in dart c635
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AZjeff
$50 Site Donor 2023
Maybe wait til the car's broken in?
Ford "tranny honey" works wonders on all sorts of manual transmissions
Not a fan of any of the RP gear or MT fluids.
I'd go redline, or the ford oem stuff.
You have to realize you need 2 things.
The right additives to make it shift right, and the right viscosity.
Viscosity can be troubling in the winter as most fluids get much thicker at ... 25F vs the normal operating temp.
You want the thinnest fluid possible at low temps that still remains thick enough at high operating temp for protection.. and to avoid notchy hot shifting as well.
What exactly is the rallye package? Different bumpers?
I tried their website and it says
"competition package starting at 295$"
I'd go redline, or the ford oem stuff.
You have to realize you need 2 things.
The right additives to make it shift right, and the right viscosity.
Viscosity can be troubling in the winter as most fluids get much thicker at ... 25F vs the normal operating temp.
You want the thinnest fluid possible at low temps that still remains thick enough at high operating temp for protection.. and to avoid notchy hot shifting as well.
What exactly is the rallye package? Different bumpers?
I tried their website and it says
"competition package starting at 295$"
If its not shifting smooth straight from the factory no fluid will fix that.
Originally Posted By: Rand
Not a fan of any of the RP gear or MT fluids.
I'd go redline, or the ford oem stuff.
You have to realize you need 2 things.
The right additives to make it shift right, and the right viscosity.
Viscosity can be troubling in the winter as most fluids get much thicker at ... 25F vs the normal operating temp.
You want the thinnest fluid possible at low temps that still remains thick enough at high operating temp for protection.. and to avoid notchy hot shifting as well.
What exactly is the rallye package? Different bumpers?
I tried their website and it says
"competition package starting at 295$"
Thicker sway bars bigger tires nicer wheels ect.
Not a fan of any of the RP gear or MT fluids.
I'd go redline, or the ford oem stuff.
You have to realize you need 2 things.
The right additives to make it shift right, and the right viscosity.
Viscosity can be troubling in the winter as most fluids get much thicker at ... 25F vs the normal operating temp.
You want the thinnest fluid possible at low temps that still remains thick enough at high operating temp for protection.. and to avoid notchy hot shifting as well.
What exactly is the rallye package? Different bumpers?
I tried their website and it says
"competition package starting at 295$"
Thicker sway bars bigger tires nicer wheels ect.
Originally Posted By: Rand
Not a fan of any of the RP gear or MT fluids.
I'd go redline, or the ford oem stuff.
You have to realize you need 2 things.
The right additives to make it shift right, and the right viscosity.
Viscosity can be troubling in the winter as most fluids get much thicker at ... 25F vs the normal operating temp
You want the thinnest fluid possible at low temps that still remains thick enough at high operating temp for protection.. and to avoid notchy hot shifting as well.
What exactly is the rallye package? Different bumpers?
I tried their website and it says
"competition package starting at 295$"
Why are you not a fan of royal purple?
Not a fan of any of the RP gear or MT fluids.
I'd go redline, or the ford oem stuff.
You have to realize you need 2 things.
The right additives to make it shift right, and the right viscosity.
Viscosity can be troubling in the winter as most fluids get much thicker at ... 25F vs the normal operating temp
You want the thinnest fluid possible at low temps that still remains thick enough at high operating temp for protection.. and to avoid notchy hot shifting as well.
What exactly is the rallye package? Different bumpers?
I tried their website and it says
"competition package starting at 295$"
Why are you not a fan of royal purple?
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I cannot say how it will work in your Dart, but in my car's T56 the RP Synchromax caused a MAJOR grind in EVERY single gear.
My guess is that whatever is in their "Synerlec" additive they put in this fluid, caused my blocker rings/synchros to not engage/catch properly, due to a too low coefficient of friction.
My guess is that whatever is in their "Synerlec" additive they put in this fluid, caused my blocker rings/synchros to not engage/catch properly, due to a too low coefficient of friction.
If this was my car, I would do the following in this order:
1. Since it is under warranty, I'd have the dealer check it out. If the dealer thinks this is normal operating behavior, then
2. Wait until the weather is warmer, then pass judgment on the shift quality.
3. If I still could not stand the shift quality, then replace the fluid with the OE stuff as the first change because you don't want the manufacturer to deny your claim if the transmission fails because you used aftermarket fluid. Keep all receipts.
1. Since it is under warranty, I'd have the dealer check it out. If the dealer thinks this is normal operating behavior, then
2. Wait until the weather is warmer, then pass judgment on the shift quality.
3. If I still could not stand the shift quality, then replace the fluid with the OE stuff as the first change because you don't want the manufacturer to deny your claim if the transmission fails because you used aftermarket fluid. Keep all receipts.
Originally Posted By: ram_man
Originally Posted By: bvance554
Originally Posted By: ram_man
Going on 8,000 miles
Oh definitely overdue for a change:
Did you read the post I want make shifting smoother if possible.
Yea I read it. You have a new car and think you're going to improve how it shifts by putting some different fluid in it. Go ahead. If it shifts poorly then go have it looked at. Otherwise I doubt RP is going to improve anything.
Originally Posted By: bvance554
Originally Posted By: ram_man
Going on 8,000 miles
Oh definitely overdue for a change:
Did you read the post I want make shifting smoother if possible.
Yea I read it. You have a new car and think you're going to improve how it shifts by putting some different fluid in it. Go ahead. If it shifts poorly then go have it looked at. Otherwise I doubt RP is going to improve anything.
Originally Posted By: ram_man
It doesn't shift poorly at all I just am trying to improve the quality with a good fluid.
A lot of what I am reading in this thread is nonsense, and probably written by people that have not had this experience themselves...
Of course you can affect the shift quality with different fluid types and viscosities. The synchros depend on the friction characteristics of the fluid to work properly, so as long as you have no underlying mechanical or clutch hydraulic problem, then go right ahead and try out some different fluids.
On my last vehicle, which was a 2005 Nissan Altima 3.5 SE with a 5-speed M/T, it shifted awful from the factory until it was 100% warmed up (and I mean driven for at least 15 minutes and that was in summer temps of 80+ F). When "cold" (again, summer temps of 80+ F, but not driven for several hours), I could not engage first gear at ALL without coming to a complete stop, and second would grind. Also, I could not downshift to second without double-clutching, and would still result in a grind.
Draining the factory fill for Amsoil MT-90 netted me a good improvement in shift quality, reduced grinding, but still required a warmup. This was due to the fact that my transmission really preferred a fluid with reduced viscosity. So I ended up settling on a mix of 60% Redline MTL, and 40% Redline MT-90 to give me the shiftability I wanted. After this mix was in the car, no more grinding with 2nd gear except in the middle of the winter when extremely cold, and only for a few minutes. Also, I was able to select first gear while rolling as well.
Fluid absolutely makes a difference. Try getting a high quality synthetic oil to take advantage of the higher viscosity index that they offer. You will still get the same protection (hot viscosity), but when the car is cold, the syn fluid will be thinner than most conventional lubricants.
The only problem with changing fluids around for best shift feel is that you have to try them out and experiment. This can take a while to get something to your liking, and cost a lot of money until you settle on something. Also, you need to give each fluid some time/miles to work correctly as the old fluid and additives will still be on the synchros right after the change.
It doesn't shift poorly at all I just am trying to improve the quality with a good fluid.
A lot of what I am reading in this thread is nonsense, and probably written by people that have not had this experience themselves...
Of course you can affect the shift quality with different fluid types and viscosities. The synchros depend on the friction characteristics of the fluid to work properly, so as long as you have no underlying mechanical or clutch hydraulic problem, then go right ahead and try out some different fluids.
On my last vehicle, which was a 2005 Nissan Altima 3.5 SE with a 5-speed M/T, it shifted awful from the factory until it was 100% warmed up (and I mean driven for at least 15 minutes and that was in summer temps of 80+ F). When "cold" (again, summer temps of 80+ F, but not driven for several hours), I could not engage first gear at ALL without coming to a complete stop, and second would grind. Also, I could not downshift to second without double-clutching, and would still result in a grind.
Draining the factory fill for Amsoil MT-90 netted me a good improvement in shift quality, reduced grinding, but still required a warmup. This was due to the fact that my transmission really preferred a fluid with reduced viscosity. So I ended up settling on a mix of 60% Redline MTL, and 40% Redline MT-90 to give me the shiftability I wanted. After this mix was in the car, no more grinding with 2nd gear except in the middle of the winter when extremely cold, and only for a few minutes. Also, I was able to select first gear while rolling as well.
Fluid absolutely makes a difference. Try getting a high quality synthetic oil to take advantage of the higher viscosity index that they offer. You will still get the same protection (hot viscosity), but when the car is cold, the syn fluid will be thinner than most conventional lubricants.
The only problem with changing fluids around for best shift feel is that you have to try them out and experiment. This can take a while to get something to your liking, and cost a lot of money until you settle on something. Also, you need to give each fluid some time/miles to work correctly as the old fluid and additives will still be on the synchros right after the change.
I'd use a dedicated MTF and make sure it is GL-4 only.
ram_man: what does the owner's manual say is required for fluid?
ram_man: what does the owner's manual say is required for fluid?
^I did a bit of digging and it appears that this Fiat transmission specs a straight grade 75W GL-4 MTF fluid (same as BMW MTF-LT-3 and some VW specs).
Since this transmission already has the thinnest type of MTF available, if the OP wants to step up to a synthetic to improve "all temperature" performance of the transmission, something like Castrol Syntrans B 75W or MTF-LT-3 from the BMW dealer would work.
Mind you, in North America, a synthetic 75W MTF is not exactly commonplace or super easy to source. Toyota also has a 75W MTF, but not sure about its specs or whether it is synthetic or not. Some dual-clutch transmission fluids (DCTF's) may also be appropriate as they are generally GL-4 fluids in a similar viscosity range to the 75W MTF's (always verify suitability and viscosity first though).
Have a look at Molakule's MTF list (it's posted all over this sub-forum) and see if any of the super light weight MTF's are available to you.
Since this transmission already has the thinnest type of MTF available, if the OP wants to step up to a synthetic to improve "all temperature" performance of the transmission, something like Castrol Syntrans B 75W or MTF-LT-3 from the BMW dealer would work.
Mind you, in North America, a synthetic 75W MTF is not exactly commonplace or super easy to source. Toyota also has a 75W MTF, but not sure about its specs or whether it is synthetic or not. Some dual-clutch transmission fluids (DCTF's) may also be appropriate as they are generally GL-4 fluids in a similar viscosity range to the 75W MTF's (always verify suitability and viscosity first though).
Have a look at Molakule's MTF list (it's posted all over this sub-forum) and see if any of the super light weight MTF's are available to you.
Royal purple emailed me back today and Said synchromax is their recommended product for me though it's not licensed with the manufacturer so for warranty concerns it's a gray area but im not worried about that. Should i try the rp or should I try something else. I'd like to pick the best choice possible.
Originally Posted By: ram_man
Royal purple emailed me back today and Said synchromax is their recommended product for me though it's not licensed with the manufacturer so for warranty concerns it's a gray area but im not worried about that. Should i try the rp or should I try something else. I'd like to pick the best choice possible.
You can definitely try the Royal Purple Synchromax. It's just a touch thicker than your stock OEM fluid at 100C, but not enough that would prevent me from trying it myself if it were my car.
Make sure you let us know how it is when you get it in there (or whatever else you choose instead).
Royal purple emailed me back today and Said synchromax is their recommended product for me though it's not licensed with the manufacturer so for warranty concerns it's a gray area but im not worried about that. Should i try the rp or should I try something else. I'd like to pick the best choice possible.
You can definitely try the Royal Purple Synchromax. It's just a touch thicker than your stock OEM fluid at 100C, but not enough that would prevent me from trying it myself if it were my car.
Make sure you let us know how it is when you get it in there (or whatever else you choose instead).
FPT c635 and c633 are specified with Tutela Gearforce 75w GL4 fluid with additional Fiat specifications.
This oil is a synthetic already. In general Petronas Europe (ex FIAT lubricanti) makes high quality products.
If you want to try something else I would suggest Castrol GL4 oil.
This oil is a synthetic already. In general Petronas Europe (ex FIAT lubricanti) makes high quality products.
If you want to try something else I would suggest Castrol GL4 oil.
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