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Octane required for 78-79 450????

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03-16-2005, 10:11 AM

RickM

RickM is offline

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Join Date: Mar 2003

Location: Convent Station, NJ

Posts: 755

Octane required for 78-79 450????

I had a discussion with a pump jockey the other day after he was blown away that I was using 87 octane (regular) in my '85 380. I mentioned to him that the owner's manual recommended this octane. He stated that his wife's 78 (or was it 79) 450 required premium.

I'm thinking he was looking at the RON rating and not converting to the US octane requirement.

Thoughts?

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Rick

'85 380 SL (sold)
'85 Carrera Flatnose
'71 280 SL Signal Red/Cognac

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