Correct Octane# for 280SE 4.5

07-15-2000, 03:07 PM

MikeTangas MikeTangas is offline

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Join Date: Apr 2000

Location: So. Cal

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I have been running regular unleaded 89 octane for the most part, with no pinging and good power. Occasionally I fill the tank with mid-grade 92 just to give a little boost. I consistantly pull 12 mpg in town, and haven't had the gumption to make a long highway run to see what the mileage would be.

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Mike Tangas
73 280 SEL 4.5

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