74-26  AW
Effect of the Johnson Gasoline Additive
             on Emissions
              March 1974
      Test and Evaluation Branch
 Emission Control Technology Division
    Environmental Protection Agency

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Background

Mr. Edward Johnson contacted the Test and Evaluation Branch
requesting evaluation of a fuel additive he had developed.
To support claims concerning the additive, he supplied
laboratory test data indicating significant reductions in
carbon monoxide emissions.  On the basis of that data an
offer was extended to Mr. Johnson to test his additive at
the Ann Arbor EPA facility.

Test Program

The test vehicle was a 1970 Chevrolet equipped with a 350 CID
engine and an automatic transmission. The fuel used for the
baseline tests was Indolene HO  (unleaded).

The additive material is a processed white oil, heated,
chilled and aerated, mixed with a small quantity of an
ether and an aromatic oil and further aerated. One ounce
of additive was used per gallon of gasoline.

Test Results and Conclusions

While slight reductions in HC and NOx were indicated during
the EPA testing, they were of a magnitude which does not
allow determination of whether normal vehicle and test
variability or the additive was responsible.for the changes.
The reduction measured for carbon monoxide was much less
than that shown in the data supplied by Mr. Johnson.

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                             Johnson  Additive

                          1970 Chevrolet 350 CID
                          Mass emissions in gra/mi
Baseline
        Avg,
Additive
       Avg,
HC
2.13
1.91
2.02
1.80
1.77
2.00
1.86
CO
12.6
14.1
13.4
12.7
12.5
13.9
13.0
NOx
3.37
3.41
3.39
3.45
3.20
2.50
3.08
MPG
13.7
13.7
13.7
13.5
14.1
12.5
13.4
% Change
from Baseline
-8%
-3%
-9%
-2%
  *U4.0OVCftNMfNTMimT]MOOWICI: 1979- 631-112/0094

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