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Message: [QUOTE="TARM, post: 413407, member: 578"] NEVRNF, What was your rad coolant temp running with those trans fluid temps. I would think it would have to be higher than the the trans temp other wise the only effect it could have would be to cool it thus deleting it from the route should cause a temp rise not drop. Does my logic follow correct? ------------------------------------------------------------------------------------ I am a bit at a loss as to how somehow putting the 6.0 cooler in the same location as the stock cooler which both have the same basic thickness but is much larger is H is somehow causing higher temps. That some how now the AC condenser is restricting air flow so that it can not keep trans temps under control. Yet it allows enough air to go thru not only itself but the trans cooler and cool the IC air charge to temps under 200 as well as then to pas thru the IC and still keep the rad cool enough to keep the engine coolant in the 195 range. Besides look how many countless threads there are with people swapping in the 6.0 trans cooler and temps dropping way down no where near the 200 mark. Sorry but I very much doubt the issue is the condenser or lack of air flow or heat sinking. BTW on the heat sink idea are some peoples coolers actually in full contact with the AC condenser over their surface area? My has a gap and does not contact it. Without contact it would not function as a heat sink either way and if it was and the AC was off the temps should drop drastically as not the AC would act as the sink for the cooler and with it at the front position has first contact with ambient air flow. If the case of contact maybe tweaking the mounts so it does not touch but I still doubt that is the issue. The air bubble Dennis mentions I can see being an issue as I questioned it myself when installing my cooler with ports down. But I guess its a trade off between gunk collecting in the cooler or a possible air bubble when you first install it that may have to be purged. Possibly switching to the larger trans lines may take care of the issue if that is what is preventing it from purging properly. Line F81Z-7A031CE Line F81Z-7A030CA By Pass Tube 2C3Z-7H322-BA So the air bubble is one way that there could be an issue with higher temps but this seems to be a small one given the number of people running 6.0 coolers most all installed in the same way. My thought is its only an issue at install and if its purged OK then it will not be an issue going forward but I could be wrong on this. If either one of these were a somewhat consistent issue or at least a one with a likely possibility we would see the issue across the board. But looking at how many hundreds if not thousands of people that have upgraded to the 6.0 cooler over the years with the overwhelming majority seeing huge drops in trans temps I can not see how the AC condenser or anything having to do with its location is an issue or the air bubble is a large issue. Just way to many running it with nothing but great results. But when you narrow it down to those with upgraded/perf built transmission there seems to be a fair number of reports of higher trans temps. Sure some are fine but I have seen a good number of posts by people doing nothing but swapping in a BTS and having it run hot. I think the person that posted about the possibility of the torque converter is on to something. I recall one person having to send back his trans because of hot temps and it was the converter. Can not recall what it was. This was also an issue I was PM about with a raceX one that also ended up being the converter. [/QUOTE]