TERMS

Research Octane Number plus Motor Octane

Number, divided by two. Used now as general

measure of road octanes of gasoline.

Rust and oxidation-inhibited.

A lubricating oil which, after undergoing a period

of service is collected, reprocessed and sold for

reuse. (Not to be confused with re-refined oil.)

The term is now used to describe any oil of red

color, regardless of refining process.

Standard British viscometer. The number of

seconds required for 50 ml of an oil to flow out

of a standard Redwood viscometer at a definite

temperature (IP Method 70). Instrument is

available in two sizes: Redwood No. I and No.

II. When the flow time exceeds 2,000 sec, the

No. II must be used.

An important test for gasolines. It is a measure

of the vapor pressure of a sample at 100°F, and

the test is commonly made in a bomb. The results

are reported in pounds (ASTM Method D 323).

Totally re-distilled base stocks made from used

oils that have been fully hydrotreated to remove

all contaminants. This highly re-refined base oil

can then be blended with new performance

additives and VI improvers to create a new oil.

Laboratory tests cannot determine any

difference between the base oil produced by

Safety-Kleen’s unique re-refining process and

virgin crude base oil.

A test for determining the knock rating, in terms

of ASTM Research octane numbers, of fuels

for use in spark-ignition engines. The knocking

tendency of the fuel is compared with those for

blends of reference fuels of known octane

numbers when run in the ASTM-CFR engine at

600 rpm under standard operating conditions

(ASTM Methods D 908 and D 1656).

A numerical value based upon the relative antiknock

performance in an automobile of a test

gasoline, as compared with specified reference

fuels. Road octanes are determined by

operating a car over a stretch of road or on a

chassis dynamometer under conditions

simulating those encountered on the highway.

Registrations Systems Inc.