Mine runs incredibly hot, but the oil doesn't seem to have a problem at the moment. I know there's a few other with the same issue.
If you fit an oil cooler then you'll probably need to insert the blanking plate at the top of the oil filter thread that redirects oil to the cooler. I haven't the time to buy/fit one at the moment, but I might look into it before Snet if time allows.
Cheers,
Ali