2005 Audi 4cyl has compression ratio of 9.3 to 1
2005 Honda Accord has compression ration of 9.7 to 1
WHY does Audi recommend premium fuel (
http://auto.consumerguide.com/auto/n...x.cfm/id/37495 )
and Honda does not? [since I heard a lot of talk here how compression ratio has ALL to do with what gas to use].
Thx