Re: Using 85 octane fuel
njmazzarella,
About post #1:
Yes 85 Octane is perfectly safe ... we have been using it since 1962.
What it boils down to is that the higher the altitude the lower the octane that is required.
Applies to new cars also ...
50 years ago when I worked in the "Flat Lands" on East coast (Ft Monmouth '67 and '69), West coast and Texas the octane numbers were:
At 5000 feet:
85
87
91
at sea level:
87
89
93 and up
Sunoco 190 was 86 in 1960s
Sunoco 260 was 104
Since you are asking you must live at 4000 or more.
Last edited by Benson; 12-07-2019 at 08:43 AM.
Reason: blue
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