03-08-2020, 09:32 PM
My RL has never boiled since I had the radiator recored about 10 years ago and it has to cope with some ferocious hills in my neck of the woods. The only time I have ever had a problem was on one of my runs on the climb from Dent to Dent Station, made worse by a following wind. Actually the petrol in the float chamber was boiling, not the radiator coolant. The reason was that where I had filled up with petrol only normal unleaded was available, whereas I always run on Super unleaded wherever possible.