The benefits of a oil cooler can’t be disputed. I got a 10 to 15 degree reduction in head temps with the addition of the cooler. But there’s a couple of things you got to watch for.
I have observed two instances where the add-on coolers have failed. Both were due to the hose and clamps. One is where the hose got pulled loose and the second ,where the installer obviously over tightened the clamp, cutting the hose. In both cases, the buggy was done for the day. The hose and clamp method seems to work well in a scooterson the street but off road needs something stronger and more dependable. You won’t know a failure has occurred until it’s too late. unless someone behind you gets oil on their face and gets you stopped in time to save the motor. You can pump the case dry in a matter of moments.
For piece of mind , I re-tapped the case and the cooler to accept AN-6 fittings and had a couple of high temp, pressure hoses made. The case and cooler come tapped for metric fitting but they are hard to come by and have to be special ordered. AN6 is common so the fittings and hose can be had everywhere.
When you mount the cooler make sure the inlet/outlets are on top. Otherwise the cooler will drain back into the case causing a overfill problem plus this keeps oil in the system so you don’t have head starvation until pressure builds.
I use one that looks identical to yours It’s a mini radiator and it gets as hot as a radiator. My cooler is mounted on the frame just above and behind my right shoulder. Maybe about a foot away but I could feel the heat radiating off onto my shoulder. Not blistering but a touch uncomfortable. Keep the heat factor in mind while choosing a mounting spot. I cured this problem by fabbing a shroud just like the shroud in a car and stuck a computer CPU fan in. The shroud and fan moves all the heat out the back and keeps it cooler at low speeds when there’s not a lot of air moving through. The fan runs on milliamps so there no measurable amp loss. I control it with a on/off switch on the dash. According to a Trail Teck, head temp drops approximately 3 degrees when I switch the fan on while at idle. Not a huge percentage but every bit helps
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