Petrol grades and unleaded 4 star

Honest John Back Room » Motoring discussion
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Thu 21 Oct 2004 22:08
Petrol grades and unleaded 4 star - Peter C
I know the for and against Optimax argument has raged over many posts but I have noticed that Sainsburys sell unleaded 4 star for just 2p more per litre. My BMW 530 handbook recommends 98 octane. I only recently noticed this weeks after buying the car and running it on 95 octane. The Sainsbury's unleaded 4 star is 97 octane. Is this a poor man's Optimax?

Incidently my 3 year old 530 runs well on 95 but I must try Optimax soon and compare it.
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Fri 22 Oct 2004 00:15
Petrol grades and unleaded 4 star - v8man
If your handbook recommends 98 octane then that is what you should be using. You will not obtain optimum performance or economy on anything less and may even damage your engine.
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\"Nothing less than 8 cylinders will do\"
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