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ENGINEERING RESEARCH & APPLICATION Ltd.
E.R.A.
U.K.

Report on fuel consumption and power testing for Xcel Plus  
(tested under a private label)

INTRODUCTION

E.R.A. Limited was approached and agreed to undertake on a purely commercial basis, a series of tests for Xcel Plus. It was explained by Xcel Plus that they had developed a friction modifier that would reduce frictional losses and therefore improve fuel consumption and power.

Tests were agreed on a "back to back", these tests are described on page 3 of this report under sub heading Test Procedure. Xcel Plus was to be responsible for for the vehicle outside E.R.A. premises, it was, therefore, necessary to conduct Check Tests to carry our Engine analysis against Manufacturing tolerances.

The first series of Tests were carried out on the 16th April, 1986. Prior to the test the vehicle was checked and found to be within manufacturers specified parameters. Oil levels were visually observed but complete investigation of lubricating fluids was not undertaken. It was agreed that Xcel Plus  would introduce the friction modifier to the engine, gear box, and back axle and after driving the vehicle for 1000 miles the said vehicle would be returned and the second series of tests were undertaken after first checking engine "set-up" and conducting the tests under as near identical conditions as possible. 

CONCLUSIONS 

1. At a steady 90 K.P.H. on the chassis dynamometer there was an improvement in fuel consumption of 5.15% or 2.29 m.p.g. between Test 1 and Test 2.

This difference is more than would be expected due to experimental error and indicates a genuine improvement.

2. At a steady 120 K.P.H. on chassis dynamometer there was an improvement in fuel consumption of 11.32% or 4.28 m.p.g., between Test 1 and Test2.

This difference is considerably more than would be expected due to experimental error, and indicated a substantial improvement.

3. Urban testing, to E.E.C. , procedures, showed a 7.0% improvement for Test 2 compared with Test 1, once again indicating a substantial gain.

4. Rear wheel power was checked in both Test 1 and Test 2 vehicle "as received" conditions.

A substantial increase in power in favor of Test 2 was obtained throughout the operating range of the engine.

5. A series of "Run Down" tests were undertaken clearly indicating that the Test 2 "as received" condition exhibited much less friction resistance from the power train than in Test 1.

6. The vehicle had accumulated 1000 miles more between the tests, Test 1 being at 33,000 and Test 2 at approximately 34,000 miles. 

COMMENTS

It is our opinion that the improvement in fuel consumption and power between Test 1 and Test 2 were genuine and taking into account experimental error represented a considerable improvement.

The best results supplied, are those achieved having checked the vehicle at E.R.A. and setting up to manufacturer's basic specifications were necessary.

The difference in fuel consumption and power between the two tests is what could be expected if the Friction Modifier did in fact reduce friction in the power train.

Based on the results obtained, the frictional losses were reduced between the two tests.

We have been assured that the only difference between the two tests was the addition of the Friction Modifier Xcel Plus.  This being the case, the conclusions given in our report are valid.

Finally, the tests undertaken were purely associated with measuring fuel consumption and power under exact laboratory controlled conditions, no other opinions concerning possible detrimental effects of the friction modifier were asked or given.

Reported by: A. Braddon, Approved by : J. Senior



ENGINEERING RESEARCH AND APPLICATION LIMITED
CUSTOMER : Xcel Plus
SUMMARY OF TEST RESULTS
VEHICLE: Ford Capri 2.0L

Vehicle : Ford Capri 2.0L

A. Fuel Consumption

Average

Average

Steady Rate 90 kph (56.25 mph)

44.48 mpg

46.44 mpg

Steady rate 120 kph (75.0 mph)

37.82 mpg

42.10 mpg

Urban Cycle (ECE Proceedure)

23.70 mpg

25.36 mpg

 

B. Power Curve (Rear wheels 3rd gear)

Engine RPM

Test # 1

Test # 2

1500

15.80Kw

17.60Kw

2000

21.00Kw

24.60Kw

2500

28.10Kw

31.50Kw

3000

32.20Kw

38.30Kw

3500

39.20Kw

44.40Kw

4000

44.90Kw

49.80Kw

4500

47.70Kw

53.60

5000

49.40Kw

53.60Kw

5500

48.30Kv

53.00Kw

 

C. Run Downs 70 to 20 MPH in 4th Gear (5 tests run on each 
     occasion )

Test # 1

Test # 2

45.73 sec.

47.9 sec.

46.52 sec.

48.3 sec.

46.95 sec.

48.7 sec.

46.52 sec.

49.0 sec.

46.98 sec.

49.4 sec.

AVERAGE

46.54 sec.

48.66 sec.