arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 29d Gender: Male Location: Perth Posted 18/12/15 03:20 AM Share Posted 18/12/15 03:20 AM Is the fan operated by a thermostat. Did you install a thermostat in the line to maintain a minimum temp Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 18y 7m 2d Gender: Male Location: Perth Posted 18/12/15 03:24 AM Share Posted 18/12/15 03:24 AM Yes and Yes. Difference is Cooler see airflow whenever the car is moving and doesn't have coolant circulating through it to maintain the temp. Link to comment Share on other sites More sharing options...
FiftyOne Bronze Donating Members 1,145 Member For: 10y 9m 24d Gender: Male Posted 19/12/15 12:41 AM Share Posted 19/12/15 12:41 AM Again, I'd stick with an oil2water setup. I see too much fluctuation, both between the hot & cold days, and potential airflow issues with an air exchange arrangement. That and it could cool things down far too much. That said, if I was doing track days though, I'd either use air, or both Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 29d Gender: Male Location: Perth Posted 19/12/15 01:35 AM Share Posted 19/12/15 01:35 AM Yes and Yes. Difference is Cooler see airflow whenever the car is moving and doesn't have coolant circulating through it to maintain the temp.True but the thermostat should keep the oil at min temp say 70 or 80c 1 Link to comment Share on other sites More sharing options...
gbp Member 57 Member For: 10y 2m Posted 01/01/16 06:46 AM Share Posted 01/01/16 06:46 AM Installed mine behind intercooler, only thing I noticed was cooler trans temps, ZF shifts fine on and off the track - used this one http://www.ebay.com.au/itm/121778714579Because I have a pretty thick intercooler I removed the aircon radiator (I already broke the line going into it fitting IC so no issues there lol) so fitting was super easy. Link to comment Share on other sites More sharing options...
nelsonian101 Donating Members 961 Member For: 15y 10m Gender: Male Location: Sydney Posted 02/01/16 03:43 AM Share Posted 02/01/16 03:43 AM Is the ZF tune likely to affect ZF temps greatly (even if shifting manually)?Been experimenting with a 3rd ZF tune (this one very aggressive) and ZF temps were approaching 110deg plus regularly after only 3 or 4 circuit laps on a 28deg ambient day.(This is with a fog-light ZF cooler with thermo fan on)Only change on this day at Wakefield was the ambient temp and ZF tune. Link to comment Share on other sites More sharing options...
GeorgeGhia New Member 9 Member For: 8y 1m 30d Posted 29/02/16 11:14 AM Share Posted 29/02/16 11:14 AM Hi All, I have been asking the question, "what is the recommended operating temperature for the ZF6?", for some time, today I received a personal phone call from a ZF technical representative in answer to my question. I was driving my car and was also monitoring my transmission temperature at the time so his timing could not have been better, we had a very interesting discussion. Here's the gist of what was discussed by phone and later email. We discussed the details of my car, the fact that I had removed my heat exchanger from my car and had had installed a suitably sized PWR air/oil cooler mounted in front of the a/c condenser, connected to the trans with 12mm hose, without thermostat, and was averaging trans temp of 58C after ½hr driving, warm up period of 5mins to approx 35C from 23C on average. Provided the cooler and connecting hoses are correctly sized, the fitting of an air/oil cooler to a ZF6 is not detrimental to the operation of the ZF6, and will extend the life of the transmission and fluid. Lower running temperatures are beneficial to the life of the transmission and fluid. ZF6 transmissions are test run at start up temperatures as low as -20C. It is critical that ZF6 Lifeguard fluid is used. The ZF6 generates its own heat at start up to attain minimal running temperature of 30C. By Email: Hi George, Normal transmission operation for ZF 6HP26 is between 30 – 120 degrees C. Before 30 degrees C we have warm up strategy and after 120 degrees C the transmission will enter high temperature strategy (Hot mode). Oil checking overflow level is a 40 degrees C and depending on climate normal transmission oil sump temperatures can vary between 60 and 100 degrees C. I don't see any issues with the temperatures you are talking about providing the oil flow to the transmission has not been restricted. As your operation temps are lower I see this as a benefit for extending the service life of the oil. Kind regards Your ZF Service Desk ZF Friedrichshafen AG 88038 Friedrichshafen,Germany So in the opinion of a qualified ZF technical representative a correctly installed air/oil cooler is beneficial to life of a ZF6 transmission and its fluid. Cooler running temperatures as low as 30C are within the recommended operating temperatures and better for the ZF6 and Lifeguard fluid. Very pleased to have finally got some qualified answers, thanks ZF. Hope this information helps all my fellow forum members. Regards, George Also take a look here:http://www.fordforums.com.au/showthread.php?t=11441275 "Let's eliminate the Milkshake" __________________ 2007 Ford Fairmont BF Mk11 Sports Ghia 4L ZF 6 Auto in Ego/Warm Charcoal Leather, PWR Air/Oil Tran's Cooler, Formula 1 Tint, Parrot CK3000: Transmission service Trevor, Transdoctor 372a Settlement Rd Thomastown,Victoria 3074 T: 0435-928-517transdoctor@hotmail.com Previous : 1997 Ford Fairmont Ghia EL Tickford 4L 3 Speed Auto Heritage Green 1995 Ford Falcon XL GL 4L 3 Speed Auto Silver 1979 Ford Fairmont Ghia 4L 3 Speed Auto Arctic Blue 1 Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 18y 7m 2d Gender: Male Location: Perth Posted 29/02/16 11:40 AM Share Posted 29/02/16 11:40 AM I read that email as saying trans temps lower than 130deg will extend the life of the trans,not running an air/oil cooler will extend trans life. Fluid temp with a heat exchanger is maintained lower than 130deg as well. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 29d Gender: Male Location: Perth Posted 29/02/16 12:11 PM Share Posted 29/02/16 12:11 PM Keeping it below 100c will greatly increase the life of both the box and the oil. Oil to air in series with heat exchanger for the win. Link to comment Share on other sites More sharing options...
GeorgeGhia New Member 9 Member For: 8y 1m 30d Posted 30/03/16 01:49 AM Share Posted 30/03/16 01:49 AM On 29 February 2016 at 10:40 PM, Ralph Wiggum said: I read that email as saying trans temps lower than 130deg will extend the life of the trans,not running an air/oil cooler will extend trans life. Fluid temp with a heat exchanger is maintained lower than 130deg as well. Ralph, Think you might have blinkers on, I qualified the question by telling the tech I was averaging approx 50C trans temp since fitting the PWR air\oil cooler, the absolute max running temp of the ZF6 is 120C, it goes into limp mode at 130C. The tech spoke to me on the phone before sending the email and told me among other things, that the cooler the running temp of the trans the better, with a minimum optimum temp of 30C, but can be run as low as -20C. The heat exchanger cannot cool the trans to temps below the minimum temp of the coolant, cannot cope under heavy load (hence additional coolers in tow packs and selecting sports mode when towing) and the biggest worry, risk of expensive milkshake. The main point is that installing an air/oil cooler is beneficial to the ZF6 in all respects and totally eliminates the risk of a "Milkshake" Link to comment Share on other sites More sharing options...
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