Ken, do you think your car is overheating?
A different tack, and probably cheaper and easier than Waterless Coolant would be to add Water Wetter - quite common with V8 (Morgan and other marque) owners over the years. This would also mean, should you have a coolant leak, you can just add water/antifreeze. If it's not been done I'd recommend flushing the rad and block, before doing anything else... smile

Graham (G4FUJ)

Sold L44FOR 4/4 Giallo Fly
'09 Gen2 MINI Cooper ragtop
'90 LR 90 SW