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Am I throwing gas money away??

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Old 08-07-2004, 07:47 AM
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Default Am I throwing gas money away??

I know this has probably been asked before but here it goes...I have a 1992 Volvo 454...said to be 330HP...my gas dock offers 93 octane and lower...I always put in 93 because I guess it is the best for my boat but I have been told it may not be. Should I keep putting in 93 or not...it's not the money...I could give a s**t about spending a few more bucks on boating but is it better for the engine or worse?
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Old 08-07-2004, 08:28 AM
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Default Re: Am I throwing gas money away??

87, your wasting $
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Old 08-07-2004, 10:38 AM
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Default Re: Am I throwing gas money away??

I did the same until reading here. 87 will burn hotter and you'll be better off. Save miney too. Do a search, there were some excellent threads.
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Old 08-07-2004, 10:42 AM
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Default Re: Am I throwing gas money away??

Thanx guys...I think I am gonna start using the 87 and see what happens...
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Old 08-07-2004, 11:31 AM
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Default Re: Am I throwing gas money away??

Dont buy marina gas.
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Old 08-07-2004, 01:14 PM
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Default Re: Am I throwing gas money away??

I got my best speed on Sunoco 87 70.5 gps
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Old 08-07-2004, 06:35 PM
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Default Re: Am I throwing gas money away??

I say burn what get you the best performance. It really depends on how Volvo calibrated the engine which octane fuel it will run best on. I had a 290 PQ with 454 Mag EFI's that would get 400 RPM better on the top with premium (93 octane) fuel. It ran fine on the 87, but got an additional 2 mph on the top with premium fuel A friend with a 502 Mag EFI in a 26 Velocity had similar experience.

Now the 500 EFI's in my AT were a different story. The top end was the same regardless of what I burned and the Premium would soot the transom.
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