Beetle Fuel
 

When i first purchased my 1970 Beetle i was told to put in £5.00 worth of 4 star petrol every few times i filled up

The car has been off the road for 10 years or so and as far as I aware 4 star replamennt is no longer available

Is it ok just to use unleaded with a Beetle or does something need to be done to the engine etc