Thread: Anyone upgraded their auto transmission cooler?

LRH,
I haven't felt the need to upgrade the ATF cooling, but did enquire about it a few years ago. DPL can supply/fit this.
Cheers,
Rob

DPL have always been very good at "value adding" your vehicle..

There is no need as plenty of people are towing at full 3,500kg without issue.

Cheers Mike,

Not sure if my gearbox is the original with 260k on it but since I have owned it I have serviced it and replaced the sump with the metal one.

Just trying to be over cautious as do tow heavy trailers full of firewood etc at 120kmph down the motorways!

Not owning a D3/4, anything that keeps your trans fluid cooler is a good thing..

here's another point of view
http://www.aulro.com/afvb/l319-disco...talled-d3.html

Originally Posted by Tombie

DPL have always been very good at "value adding" your vehicle..

There is no need as plenty of people are towing at full 3,500kg without issue.

No kidding, the one and only time I went out there before I started modifying my car they recommended that I put in the transmission cooler at about $1k, and a water separator trap for about $1k and 2 or three other thinks at about $1k each before we even got to the bullbar and Mitch hitch and fuel tanks etc.

The Discovery 3/4 transmission cooling is fine and more than adequate. The only reason to consider another cooler is to remove the chance of the factory cooling system developing a leak and putting coolant into your transmission fluid and vice versa. There have only been a few reports of this with Landrovers but is quite common with Falcons my transmission specialist tells me.

Originally Posted by Geedublya

The Discovery 3/4 transmission cooling is fine and more than adequate. The only reason to consider another cooler is to remove the chance of the factory cooling system developing a leak and putting coolant into your transmission fluid and vice versa. There have only been a few reports of this with Landrovers but is quite common with Falcons my transmission specialist tells me.

True only a few reports, however, Geedublya and I have some first hand experience.

Reviving an old thread because... I too suspect that I've had an overheating issue. 2011 SDV6 D4 spent in low range for the day in the Vic high country (not towing) in cool weather and towards the end of the day the transmission was starting to misbehave. Holding onto low gears too long, grabbing the next gear in a violent manner. Eventually received an amber 'transmission warning' which didn't show up in the faults when checking with my GAP IID tool. Next morning it was fine and hasn't occured since so I suspect it was heat related. I had the gearbox looked at by the official ZF specialists in Dandenong, Victoria, shortly thereafter and they gave it a clean bill of health with no faults and normal operating characteristics although they did say the fluid was black and showing signs of excessive heat. (I have had the fluid changed and new metal pan installed at appropriate intervals) Interested in adding a transmission cooler to rule out heat issues in the future as I'm more often than not towing my Patriot X1 with me, in warmer weather, which will create more heat than I did when not towing at all.