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> Running On 91, tank half filled with 91 octane fuel
polarbeast
post Jul 28 2008, 05:35 AM
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Location: New Zealand
Drives: 96 VR4 Legnum
I have a 2.5ltr twinturbo legnum, now my numb skull girlfren put 91 octane, fuel, petrol, blah blah instead of 96 which i use, in the bloody tank, say about 30 smackers, that filled almost half tank, now will that do serious damage to my engine? yeah blame tha mises:)

any help with this i would be greatful

cheers. polarbeast [FONT=Arial][SIZE=7][B][/B]
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KiT TeUnG 2549
post Jul 28 2008, 03:23 PM
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Drives: 1997 Mitsubishi Diamante VR-S SUPER INVECS II , 1990 Mitsubishi Galant VR4 , 2006 Mitsubishi Triton PLUS 3.5 DOCH
It should not , but i try always run 97 petrol because they are high compression or turbo. The better octane gives a clean burn and no knock retard as lower grade petrol would. Running a lower grade petrol in a Turbo or higher compression engine yu will burn more petrol and the engine will not be as efficient because of the premature detonation and knock retard running lower grade petrol causes.
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