D2a - replacement fluid for ACE system

**twr7cx** · 10th March 2011, 08:42 AM

Can anyone please advise as to what fluid to use in the Active Cornering Enhancement system on a 2003 Land Rover Discovery 2 (refresh)?
Also what is the best method to clear out all the old fluid and fill with new?

**simonl8353** · 10th March 2011, 11:26 AM

Penrite have brought out an ACE Fluid for the Discovery II. I bought a bottle at Autobarn for $21 a few weeks ago.

See this link http://www.aulro.com/afvb/discovery-...ml#post1383176

As for bleeding, the RAVE CD states in Section 60.60.13 to plug in "Testbook" and follow the procedure. If you do not have testbook you might consider asking a LR specialist and pay them a few $$ to get it right. It is important not to allow any crud to enter the system.

mattg · 13th March 2011, 05:06 PM

When I changed mine I ended up going to the dealer with a clean and dry 4ltr Bottle and they filled it up for me for $45. good deal I though. and from a Dealer, WOW.

hope this helps.

Cheers

Matt

**Pedro_The_Swift** · 13th March 2011, 05:46 PM

I've thought long about this,,
and I reckon if you disconnect the return line and place in a suitable empty container, start up, stop, top up, start up
etc . A two person job but could be done.
anyone else?

Sully · 13th March 2011, 10:13 PM

Yep. I reckon you're onto something there too Pedro.

Absolutely a two man job as you'd not want to ever run it dry or have air enter the system.
The other thing you'd need to take I to account is that if the return line is disconnected when the engine is switched off, then it might suck air back into the lines, so you'd need some sort of one way valve on the end of the return line.

**Urban Panzer** · 13th March 2011, 11:11 PM

I just disconnect the feed from the reservoir, let it drain into a suitable tub, then refill with fresh fluid. Run the vehicle for a few days, then repeat the process.

**twr7cx** · 14th March 2011, 07:09 AM

Originally Posted by simonl8353

Penrite have brought out an ACE Fluid for the Discovery II. I bought a bottle at Autobarn for $21 a few weeks ago.

Cheers. Here is the link to the Pentrite site and I agree that it does seem to have been made specifically for the Land Rover ACE and PAS system:

PAS FLUID - Penrite Oil

**twr7cx** · 14th March 2011, 07:52 AM

Originally Posted by simonl8353

As for bleeding, the RAVE CD states in Section 60.60.13 to plug in "Testbook" and follow the procedure. If you do not have testbook you might consider asking a LR specialist and pay them a few $$ to get it right. It is important not to allow any crud to enter the system.

From what I understand Testbook is Land Rovers diagnostic system. Is this publicly available or a dealer only item?

**Pedro_The_Swift** · 14th March 2011, 08:09 AM

There are a couple of older testbooks in private hands,, but yes, Dealer software.

Not sure if any of the nanocoms will do it??

**feral** · 14th March 2011, 08:56 AM

Yes, the Nanocom will bleed the ACE.

Today

I'm contemplating to change the Pressure Control Valve which is the rear coil on the valve block. I still have not worked out how much fluid will be released. Urban Panzer's report suggests that it will not loose much but he was replacing the pressure transducer, which is at the front of the valve block.

But back to the OP question...I would disconnect the return line and just pump through new fluid. Let it go for a week, drive around, and repeat.

It looks easier to do than the Nanocom way.

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