2005 new to me 6 speed trouble

[NIsaacs]

It is not a synchromesh fluid and would destroy NV5600 bearings.


Was this a typo, did you mean it might destroy synchro's? I would think the bearings would love it. Two years ago I switched my manual trannys to this. However it is super expensive and have changed out my NV5600 back to standard 15/40 diesel engine oil, the miles add up quick on it. I have 254k miles on it now, 10 years running an Edge EZ with RV275 injectors, now I have an Edge juice running it on level 5 and tow in 6th all the time.

I think there is too much mystery surrounding manual transmissions and gear oil selection, they are really quite simple and only require simple oil. Keep it clean and full (not overfull) and drive.

Nick

 

[Chief USA]

Are you sure they use Mobil Delvac 50 in the NV5600? It is not a synchromesh fluid and would destroy NV5600 bearings.

It is a great G56 fluid thou.

Here is the product data sheet. Says it is for manual and semi-automatic transmissions.

http://www.phillips66lubricants.com... Triton Synthetic Transoil 50 TDSw 778796.pdf

 

[AH64ID]

Was this a typo, did you mean it might destroy synchro's?

Fixed. Thank you.

I think there is too much mystery surrounding manual transmissions and gear oil selection, they are really quite simple and only require simple oil. Keep it clean and full (not overfull) and drive.

Nick

Yes and no. While the gears and bearings are fairly welcoming to most fluids the syncros are not. Different synchros require different fluids.

Here is the product data sheet. Says it is for manual and semi-automatic transmissions.

http://www.phillips66lubricants.com... Triton Synthetic Transoil 50 TDSw 778796.pdf

Not all manual transmissions run the same fluid so it is for some manual transmissions and specifically the ones it lists the specs for. Look at the NV4500 and NV5600. Both are offered behind the same engine in the same truck; however, they require different fluids and the wrong fluid can damage them.

 

[xDiesel03]

I don't recall where I read it, but someone suggested while the clutch is depressed to shift to 4th, and then to 2nd. For reverse, try 5th, and then reverse. I started doing this and it made shifting from a standstill MUCH easier.

 

[jhenderson]

Just for info, I tried Delvac 50 trans fluid in my 5600 for a short while. Trans was nice and quiet but shifting was slow when cold. When winter came I went back to Pennzoil.

 

[Chief USA]

Just for info, I tried Delvac 50 trans fluid in my 5600 for a short while. Trans was nice and quiet but shifting was slow when cold. When winter came I went back to Pennzoil.

Thanks! That is exactly the type of review and feedback I was hoping to get. I had some concerns about this and I may go with this instead:

http://www.phillips66lubricants.com/brands-products/Single.aspx?pid=412&brand=

http://www.phillips66lubricants.com..._engine_oils/P66_KEN_SHPSyntheticMTF_TDSw.pdf

It is an synthetic SAE 40 wt. transmission gear oil which is slightly less viscous than the Mobil Synthetic 50 wt. Not sure if this would make a world of difference but hopefully just enough to make it good for use in cold weather.

 

[AH64ID]

Just for info, I tried Delvac 50 trans fluid in my 5600 for a short while. Trans was nice and quiet but shifting was slow when cold. When winter came I went back to Pennzoil.

Seeing as that fluid isn't compatible with the NV5600 syncro's it is probably a good thing it was only a short while.

 

[Chief USA]

Seeing as that fluid isn't compatible with the NV5600 syncro's it is probably a good thing it was only a short while.

In what way would it not be compatible with the NV5600 syncro's?

 

[AH64ID]

In what way would it not be compatible with the NV5600 syncro's?

I don't know the exact specifics but the NV5600 uses a different style of syncr that requires synchromesh fluid. Non-synchromesh fluid will destroy their surfaces. Synchromesh fliud is what is required for the NV5600. The NV4500 uses a different syncro/fluid, as does the G56.

 

[lpennock]

GL5 or GL4/5 will destroy syncros. Straight GL4 is ok ok. The Extreme Pressure additives in GL5 destroys yellow metal.

 

[jhenderson]

Seeing as that fluid isn't compatible with the NV5600 syncro's it is probably a good thing it was only a short while.

That's a pretty strong statement of fact. Where did you get your info?

 

[jhenderson]

Are those crickets I hear?

 

[AH64ID]

Are those crickets I hear?

Actually it's called work and a REAL life..

If you don't like it do the research yourself. It's really not that hard to provide your OWN education as ALL the information you need to get educated is readily available.

 

[AH64ID]

http://www.phillips66lubricants.com/brands-products/Single.aspx?pid=412&brand=

http://www.phillips66lubricants.com..._engine_oils/P66_KEN_SHPSyntheticMTF_TDSw.pdf

.

That is a MT-1 transmission fluids and MT-1 is the ATI spec for non-synchronized transmission.

"API MT-1 does not address the performance requirements of synchronized transmissions and transaxles in passenger cars and heavy-duty applications."

There are transmission fluids that carry MT-1 and GL-4 ratings but that one does not appear to.

GL5 or GL4/5 will destroy syncros. Straight GL4 is ok ok. The Extreme Pressure additives in GL5 destroys yellow metal.

Yeah yellow metals don't like GL5, but there is something different between transmissions requiring GL-4 and those requiring Syncromesh.

 

[jhenderson]

There is nothing in Delvac 50 that's not synchro friendly, that's why I asked you for proof. It recommended in the G56 for other applications, Mopar simply went on the cheap in the Ram line.

 

[Regcabguy]

My friend runs the Mopar fluid at an exorbitant price but it shifts as fast as my G-56 just not as precise as mine. It has a very aggressive single of unknown origin as he acquired the vehicle at an auction. 1st thing he did was swap the fluid out.

 

[AH64ID]

Not all syncro's are rated the same.

If you put NV5600 fluid in a NV4500, or visa versa, you can do damage to the syncro's. There is a reason they spec different fluid.

The G56 did get the shaft from Mopar with ATF. The spec for G56 is more closely a GL-4 if you read between the lines on some of the ratings. The actual MB spec fluid is hard to find in the states.

 

[jhenderson]

The original Mercedes fill is Mobil SHC DC. Only one retailer in the USA lists it as a stock item. MSDS sheet comparison shows Mobil 50 trans fluid is virtually identical. By the way, the Mobil site specifically states Mobil 50 trans fluid is designed to be compatible with any copper alloy based synchronizers.

 

[AH64ID]

The original Mercedes fill is Mobil SHC DC. Only one retailer in the USA lists it as a stock item. MSDS sheet comparison shows Mobil 50 trans fluid is virtually identical. By the way, the Mobil site specifically states Mobil 50 trans fluid is designed to be compatible with any copper alloy based synchronizers.

Yes for the G56, but that doesn't mean the NV5600 is compatible with it. Both the GL-4 and synchromesh fluids are yellow metal compatible but they are different fluids and I haven't ever seen a transmission rated to use either. It's one or the other, at least in anything being used behind a Cummins.

 

[jhenderson]

What happened to its not compatible with 5600 synchronizers. That was the statement of fact you made that I questioned.