Unleaded 4 Star Replacement Fuel - Any good for us?
#1
![Question](https://www.scoobynet.com/images/icons/icon5.gif)
Keep seeing the red nozzle on the forecourts - Unleaded 4 Star replacement gas.
Anyone know what RON rating this is and wether it would be any good in a Scoob?
Mak.
Anyone know what RON rating this is and wether it would be any good in a Scoob?
Mak.
#2
Scooby Regular
![Post](https://www.scoobynet.com/images/icons/icon1.gif)
In the 1920's petrol has an octane rating of around 50 to 60. Today, Lead Replacement Petrol has a minimum octane of 97 RON, Unleaded of 95 RON, Super of 97 RON and in August 2001 Shell introduced Shell Optimax, which with an octane rating of 98 is the uk's highest octane petrol. Any good for scoob no idea matey
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