Rear Differential Fluid Change

[Gahaha]

Can't seem to find this in manual, does anyone know how many quarts is needed? I have a 2015 Genesis 5.0.

 

[EdP]

Can't seem to find this in manual, does anyone know how many quarts is needed? I have a 2015 Genesis 5.0.

From my 2018 G80 manual so it should be the same.

Front (AWD)/rear differential oil

Front (AWD) 0.74 US qt. (0.7 l) HYPOID GEAR OIL API GL-5 75W/85

Rear 1.48 US qt. (1.4 l) (SK HK SYN GEAR OIL 75W/85 or equivalent

 

[Gahaha]

From my 2018 G80 manual so it should be the same.

Front (AWD)/rear differential oil

Front (AWD) 0.74 US qt. (0.7 l) HYPOID GEAR OIL API GL-5 75W/85

Rear 1.48 US qt. (1.4 l) (SK HK SYN GEAR OIL 75W/85 or equivalent

Thanks! Much appreciated!

 

[Valentin]

Thanks! Much appreciated!

Hello
So what type of fluid u guys are using for differentials. I was thinking to use redline 75w90NS

 

[carguy75]

I use Royal Purple 75w-90 gear oil in my rear diff.

 

[cdaeng2]

Has anyone changed their front diff fluid? I just did my rear diff fluid on my 15 3.8 AWD and tried to search info on front diff fluid change but can't seem to find any.

 

[shahhere]

This is a silly questions but I have a 3.8 2012 sedan but I think its only the RWD version so I shouldn't have a Diff fluid to change as this would only apply to the AWD version (dint know there was one).....

Shahhere

 

[joegr]

This is a silly questions but I have a 3.8 2012 sedan but I think its only the RWD version so I shouldn't have a Diff fluid to change as this would only apply to the AWD version (dint know there was one).....

Shahhere

Your RWD car still has a rear differential, and the oil in it should still be changed every so often. With AWD, you would have a front one to change as well, but either way, you have a rear differential.

 

[shahhere]

Your RWD car still has a rear differential, and the oil in it should still be changed every so often. With AWD, you would have a front one to change as well, but either way, you have a rear differential.

Thanks for the quick update so at 72,000 miles you'd recommend doing this ?
Same fluid, washers and concept as noted in this thread?

Any headsup on whats the best way to do the drain/fill of the transmission fluid as well while I am at it?

Shahhere

 

[joegr]

Thanks for the quick update so at 72,000 miles you'd recommend doing this ?
Same fluid, washers and concept as noted in this thread?

Any headsup on whats the best way to do the drain/fill of the transmission fluid as well while I am at it?

Shahhere

I don't think that it is really needed at 73K miles, but you are also around ten years on it, so I would change it based on years, not miles.
I'll skip the transmission question. Beliefs on that are almost religious for some people.

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[shahhere]

I don't think that it is really needed at 73K miles, but you are also around ten years on it, so I would change it based on years, not miles.
I'll skip the transmission question. Beliefs on that are almost religious for some people.

Ha, no I understand that part and saw you posted in a few theads is why I asked .

One of my local dealers quoted me $250 for a "Reverse Flush" and said they replace all the fluid so wondering if its worth doing it?

I am kinda handy but the above pricing seems reasonable for the transmission but not sure if "flush" is a good thing as opposed to just a drain and fill x3....

Shahhere

 

[joegr]

Ha, no I understand that part and saw you posted in a few theads is why I asked .

One of my local dealers quoted me $250 for a "Reverse Flush" and said they replace all the fluid so wondering if its worth doing it?

I am kinda handy but the above pricing seems reasonable for the transmission but not sure if "flush" is a good thing as opposed to just a drain and fill x3....

Shahhere

Personally, full fluid exchanges have worked just fine for me. However, it is incredibly important that they use the exact correct fluid, and not whatever supposedly universal fluid that they just happen to have.

 

[carguy75]

Thanks for the quick update so at 72,000 miles you'd recommend doing this ?
Same fluid, washers and concept as noted in this thread?

Any headsup on whats the best way to do the drain/fill of the transmission fluid as well while I am at it?

Shahhere

Open(remove) the fill and drain plugs(fill plug first), let the transmission fluid drain out, close the drain plug and then use a oil hand pump to pump in new fluid into the fill hole until the transmission oil start to weep out the fill hole, close the fill plug.

Start the engine, move the shifter thru the gears and back to park. Let the fluid warm up to about 130F and then open the check plug. The fluid should drip out the check hole at a steady rate which means the level is correct. If not, add more fluid until it does drip out. If the fluid flows out, then wait until it drips. Close the check plug and done.

This is the simple explanation. The service manual will give more details on the process.

 

[coatseast]

I'm going to have mine done... 2012 with 85,000 miles. Original owner - never been changed.

 

[pmckechnie]

In my older days and musty Domestic and Mercedes the transmission oil is checked with the fluid hot and the engine RUNNING. Is this true for Genesis, or do you turn the engine OFF to check level?

 

[joegr]

In my older days and musty Domestic and Mercedes the transmission oil is checked with the fluid hot and the engine RUNNING. Is this true for Genesis, or do you turn the engine OFF to check level?

Yes, engine running.

 

[pmckechnie]

joegr​

Thanks!