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page 1-5 in 1982 Subaru 1600 and 1800 Service Manual about octane

bheinen74
in Old Gen.: 80's GL/DL/XT/Loyales...

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1-5.

"The SUBARU 1600 cc and 1800cc

engines are designed to get satisfactory

engine performane and to keep clean

exhaust gas by using gasoline no less

than 90 octane."

 

:-p

But what is "octane" in this case? Research, Motor, or the standard at the pump, (R+M)/2?

 

My bet it is Research, because I can't see why a low compression engine like an EA81 (8.5:1) would need (R+M)/2 = 90, which is a midgrade or even premium, depending on the market.

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