Have been looking at that Andy after you were up m8, and discussed with Wuz etc, But i normally just do a 3 to 5 laps before cool off anyway.
Plus winter fast approaching, i will only be at k/h 3 or 4 times a year too. And i oil change every 3k as well so was not going to bother at the mo.
If i do go down that road it will be with a thermostatic bypass type cooler as Wuz suggested
Craig