I couldn't even imagine using non synthetic oil. Castrol Edge 10w60 is $70.00 AUD here .. that's about tuppence ha'penny in British pounds! Mobile 1 is just too thin for the Q4's oil pump - I am sure it works well in more modern cars.. Having paid for more than a few 'oil analysis' readings with the Castrol Synthetic, I can certainly say that it works well. You can't really buy the Aguip product here.. so i have had no experience with it..


jim ~