Thanks for your input but the subject here is the UltraCool oil cooler not whether or not an oil cooler is needed or beneficial.
Ride Safe!!!

 

I totally agree these engines are much more durable than some give them credit for. I recently opened up my 2010 twin cam 96 with 70,000 miles on it and was amazed at how good of shape everything was. No real wear to speak of, absolutely No sludge anywhere. The upper cylinder head looked almost new.

 

I shouldn't have commented. Noticed a small puddle under the filter area a couple days ago... tracked it down to the UC adapter. Yeah, it's coming off.

 

Well no problems with mine so far.
I've check the temperature a few different times and it's always under 230. (assuming my HD oil temp gauge is accurate)

The other day while on an open road ride the fans came on for about 30 minutes and then they shut off which told me the oil had cooled down to 210.
They didn't turn back on until I got back into town.

I'm pleased with it and don't regret the purchase.

 

XiED's will cool things off a bit also.

 

As an aside;

a passive way to gain some reduction in operating oil temp is to install a filter relocation kit. I achieved a consistent reduction of about 5 deg F after installing mine, ( according to my now broken HD dipstick temp gauge ).

I also use one of the permanent type filters which have integrated cooling fins but I can't see why any filter, moved from its 2/3 shielded position at the base of the front jug, and hung out where the flowing air can reach it all around, wouldn't achieve similar results. The kit increases oil capacity marginally too which has gotta help.

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Temperature is just one factor in determining effectiveness. One of the things I noticed was better oil pressure.
BEFORE OIL COOLER - After extended riding near 95+ degrees, the pressure was about 5 lbs. at idle.
AFTER OIL COOLER - Under similar conditions, I've never seen my oil pressure dip below 12 lbs. at idle. Stays at around 27-30 lbs. going down the road.

 

That a good thing ? One of the reasons I purchased a "high flow" filter was to increase flow, (reducing operating pressure).

Pressure remains at 40 or so on cold startups for me but reduces to negligible levels at hot idle.

 

I figure the viscosity isn't breaking down as much in the heat. I always hated it when I see my engine oil at the consistency of water. It's like it doesn't stay on a surface long enough to lubricate it.

 

Oil viscocities are temperature dependent and by design automotive oils are all around 10 cSt. (Centistokes) at 212 degrees F. Synthetic oils, for example, thicken less on cooling giving rise to the mistaken notion, even by some HD technicians, that synthetics are too "watery" to function. At operating temps, again, all oils are virtually the same with synthetics being superior in film strength,,, just FYI.