OCR Text |
Show Is octane only fuel measure? Motorists sometimes wonder t,y there is often a discrepancy .'ween octane ratings men- in their automobile own-rs own-rs manual and the number on Mine pumps. cording to Amoco Oil Com-m)' Com-m)' there is an answer. The JKion comes from the fact there are three methods of ennining a gasoline's octane. Most people are familiar with . Research" octane number-l number-l system, which is what most manuals refer to when . ysting octane levels for un- gasoline. i, "Motor" octane rating test Joct SVere typically pro-tifiii pro-tifiii an 0ctane number about units lower that the Re- number. led tK 1,16 federal government tatth SCrvice stations must ,,minimum octane of each 41 tney sell, they selected a Astern for determining oc-Sesea oc-Sesea ,ed on an average of the "id u Ctane Number (RON) !it0trotor Octane Number "8 hi t l may sound confus-' confus-' that is what the govern-1 govern-1 Quires. |