Author Topic: DCT fluid changes  (Read 270 times)

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  • Posts: 19
  • au Australia
    Coffs Harbour
DCT fluid changes
« March 07, 2021, 21:41:19 »
Folks,

Have searched here and can't find much chat on changing one's DCT fluid (I've a 2017 PD and despite having the 'dry' DCT there's around 2L of fluid in them).

Just wondering are folks changing this themselves?  If so how did you find it? Easy or hard?  What product did you end up using? Seems API GL-4 70w is specified.

And what kms interval are you getting this done at?

Thanks,

Bob
« Last Edit: March 07, 2021, 22:04:35 by Bob.W » »


  • 2017 PD 5 door hatch, diesel 1.6lt, auto

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  • Posts: 10,649
  • au Australia
    Perth, WA
Re: DCT fluid changes
« Reply #1 : March 07, 2021, 23:25:14 »
As vehicles your age are still under warranty I would expect most wouldn't bother changing DCT fluid themselves when that's the service departments responsibility.

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  • Posts: 19
  • au Australia
    Coffs Harbour
Re: DCT fluid changes
« Reply #2 : March 25, 2021, 00:07:11 »
Hi Craig,
Point taken and yes I expect most wouldn't touch themselves while under warranty.  That said a qualified mechanic could, without voiding the warranty. And if folks are outside warranty - which I'd say would be a lot of DCT owners as well - they might have done or had done.

I'm actually unsure exactly what mileage Hyundai recommends changing the DCT fluid for PD's?   

It would seem like with many auto fluids that doing this more regularly is likely a good thing - though from my understanding Hyundai's DCT is a 'dry' unit - and the fluid within it is (and here's where I show my lack of auto jargon) the bits NOT within the actual clutch plate area themselves - there's only around 2L of fluid where wet DCT's seem to have 7L or more.

As part of our commute into town we descend a large, steep hill - rather than riding the brakes all the way down - we flick the DCT over into manual selection and stay in 3-4th to largely keep the vehicle to the 80kph limit.

The Hyundai manual says this is actually best practice and when I asked Hyundai they said it won't damage the DCT - but part of me thinks doing the fluid change earlier might be a good idea.

So if anyone (PD owners or not) have changed their DCT fluid I'd welcome how hard you found it.  :-)
  • 2017 PD 5 door hatch, diesel 1.6lt, auto

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  • Author
  • Posts: 19
  • au Australia
    Coffs Harbour
Re: DCT fluid changes
« Reply #3 : March 31, 2021, 23:29:13 »
FWIW if anyone is considering changing their DCT fluid (as oddly Hyundai says it's a lifetime fluid but then says it should be checked and 'replenished' at 40k - so go figure).  I personally thinking having it done sooner is a good idea given the crazy costs of a new DCT being fitted.

This page seems to have excellent info on it - sounds a tad tricky to access the superior (side) fill hole - if you do via the underneath drain hole you'll need a fluid pump or one of those squeeze bags and a suitable hose etc.
:link: DCT fluid change? | Elantra Sport Forum
  • 2017 PD 5 door hatch, diesel 1.6lt, auto

 


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