Mine freezes over as well. I had forgotten about the retrofit unit.
Is this a diy job, or something a Lotus dealer should be doing? I change my own oil often and have done a few other things on the car. The directions look fairly straightforward.
2013 Porsche Boxster (in silver and red, home at last!)
2011 BMW 128i cabrio, ///M Sport
2005 Elise in Racing Green with the touring pack (sold 8/6/12)
2007 MINI Cooper S in Sparkling Silver (sold)
Founder of the Racing Green Confederate