gearbox oil change

[salehhd]

Good day all

I have Genesis sedan 2013 for 7 years with 98k KM ( 60k mile ) MPI 3.8 - 8 speed auto

I contact the dealer in Saudi Arabia regarding the gearbox oil changer in 100K KM

the cost is about 300USD but they said :
" They are not responsible for the change and it is at your personal responsibility " ?!
I ask if i don't change it ?

we don't know it is at your personal responsibility !!


I use the car in the city most of the time and in The summer temperature reaches 50+ degrees Celsius (122F )



So Should I changer the oil or not ?

Thanks

 

[OUsig]

I paid about $230USD to do a DRAIN AND FILL for mine last year. This will not get all the fluid out but you dont want to do a "flush". The dealer there should only offer a drain and fill.
for $300USD I would do it at your mileage to keep this transmission happy
make sure a drain and fill only

 

[salehhd]

I paid about $230USD to do a DRAIN AND FILL for mine last year. This will not get all the fluid out but you dont want to do a "flush". The dealer there should only offer a drain and fill.
for $300USD I would do it at your mileage to keep this transmission happy
make sure a drain and fill only

thanks for the advice
I will do that

 

[Husam]

I paid about $230USD to do a DRAIN AND FILL for mine last year. This will not get all the fluid out but you dont want to do a "flush". The dealer there should only offer a drain and fill.
for $300USD I would do it at your mileage to keep this transmission happy
make sure a drain and fill only

Why not a flush then fill? what's the risk in that?

 

[EdP]

Why not a flush then fill? what's the risk in that?

Over time lubricants can break down and lose some of their properties. When you flush you get all the old fluid out. While that us usually a good thing, it can also cause problems. You can leave behind some of the fluid used for the flush and break down the new oil faster. You can also stir up crud that has been sitting quietly causing no harm.

Drain and fill will leave behind some of lubricant but is not a big deal as it is just a small percentage. Same as the typical engine oil change. You never get 100% as surfaces remain coated or a bit sits in a sump.

In either case, if you have existing mechanical problems, changing fluid may prolong but will not fix the existing problem.

 

[Ducatislave]

Just to add my 2 cents here, AMSOIL just recently received the SP-IV-RR certification on their Low Viscosity ECO ATF, and it is considerably cheaper (3-7 USD) per quart than the Hyundai or Ravenol ATF. Amsoil (provided you can get in over there) is excellent for high temp environments.

OE Fuel-Efficient Synthetic Automatic Transmission Fluid

 

[salehhd]

thanks all

 

[kw012]

Over time lubricants can break down and lose some of their properties. When you flush you get all the old fluid out. While that us usually a good thing, it can also cause problems. You can leave behind some of the fluid used for the flush and break down the new oil faster. You can also stir up crud that has been sitting quietly causing no harm.

Drain and fill will leave behind some of lubricant but is not a big deal as it is just a small percentage. Same as the typical engine oil change. You never get 100% as surfaces remain coated or a bit sits in a sump.

In either case, if you have existing mechanical problems, changing fluid may prolong but will not fix the existing problem.

I respectfully disagree with a majority of this on fluid change. The original transmission fluid in this case is synthetic long life from the Hyundai factory, hence the so called "lifetime" rating, and does not subscribe to crud build up like dino type oils do. Some but not near as much. The lifetime label is nonsense when one thinks about it. Ambiguous in nature at best. Name a fluid that lasts forever no matter what application! Full synthetics actually have cleaning properties in the crankcase and trans which is a benefit. To simply drain and fill will leave a substantial amount of old fluid behind (let's say at least 4-5 quarts) to contaminate the fresh oil. Not great. With a complete flush, only trace amounts remain behind and are washed off the surfaces and with the action of the mechanics; in fact the flush process actually pushes out the dirty oil until fresh fluid visibly runs thru the exit hose on the flush machine. I am going to do a full flush (my first ever as car has highway miles) and replace with Valvoline MaxLife Full Syn Fluid asap with a perfectly shifting 80K transmission under warranty in my 2012 R-Spec. Valvoline guarantees it will not void warranty in writing. As an example with another car brand...I flushed the trans on my 2000 BMW 740il with 105K on it using Mobil 1 full synthetic trans fluid. I heard opinions how it could cause problems but Mobil 1 has the correct formulation specs from BMW in it and the cost savings was substantial. It now is overdue with 140,000 more hwy miles on the same transmission and fluid and it is shifting fine as it always has. That transmission has 240,000 miles in total on it! I agree that in most cases a poorly shifting trans may not benefit from new fluid, but in some cases it can with BMWs. I know of a BMW indy shop that testifies to this. Transmissions are sensitive to pressures and depleted oils can vary in their properties due to breaking down over periods of time. Best wishes to all regardless of your decisions. These are awesome vehicles!

 

[edizzle89]

I am going to do a full flush (my first ever as car has highway miles) and replace with Valvoline MaxLife Full Syn Fluid asap with a perfectly shifting 80K transmission under warranty in my 2012 R-Spec. Valvoline guarantees it will not void warranty in writing. A

i'd be careful with this part. Valvoline can write as much as they want but at the end of the day Hyundai is the one who makes the call of it voids the warranty or not, and i've heard stories of dealers voiding warranties for pretty ridiculous stuff