I understood that there is Castrol GTX 20-50w for Classic Cars now available. I can only find Castrol SYNTEX for classic cars and I am under the impression that synthetic is not good for our classics? Anybody got definitive information? Regards Barrie Barrie Robinson (705) 721-9060 http://www.britishv8.org/MG/BarrieRobinson.htm http://www.britcot.com