VAZ-21011 engine and gearbox: compression, fuel and exhaust fixed without disassembly

Engine Diagnostics Center · scientific supervisor: Dr. Sc. (Eng.), Prof. N. P. Samoylov · approved by the director, Cand. Sc. (Eng.) D. N. Samoylov

Russia, 2000 · contract No. 1003/KYa 4 · report with signatures and seal

PRODUCTXADO technology® (XADO RVS)three 9 ml doses into the engine oil · 4.5 ml into the gearbox oil

TEST OBJECTVAZ-21011 powertrain with VAZ-2103 gearboxvehicle mileage about 100,000 km · bench running time after treatment ≈ 26 h

DOCUMENT TYPEBench test report
of the Engine Diagnostics Center

Key results

↑10-20%

compression per cylinder on a warm engine, 5-7.5 → 7.1-9.6 kgf/cm²

↓4%

specific fuel consumption at 3500 rpm, 306 → 294 g/hp·h

↓75-80%

HC content at 2500 rpm, 2100 → 430 ppm

ASSEMBLY	CONDITION AT START OF TESTS	WHAT WAS MEASURED
VAZ-21011 engine, petrol, complete	vehicle mileage about 100,000 km, oil burn 4 l per 100 l of petrol	compression per cylinder, CO and HC in the exhaust gases, fuel consumption, power, oil pressure
VAZ-2103 gearbox	part of the same vehicle	run together with the engine on the load bench

Compression per cylinder

CYLINDER	85-95 °C, BEFORE	85-95 °C, AFTER	50-55 °C, BEFORE	50-55 °C, AFTER
1	5	7.1	6.5	7.5
2	6	7.6	7	9.5
3	7	9	7	11.2
4	7.5	9.6	9.5	11.0

Values in kgf/cm², automotive compression gauge. According to the report's conclusion, compression rose by 10-20 % in all cylinders; the growth is limited by the manufacturer's nominal value.

Exhaust gas toxicity

PARAMETER	MODE	BEFORE TREATMENT	AFTER TREATMENT
CO	1000 rpm	1.9 %	1.6 %
CO	2500 rpm	0.6 %	0.5 %
HC	2500 rpm	2100 ppm	430 ppm

GIAM-27 gas analyzer, samples taken from the exhaust valve. According to the report's conclusion — CO down by 16-17 %, HC by 75-80 % depending on the mode.

Fuel consumption and power at n = 3500 rpm

PARAMETER	BEFORE TREATMENT	AFTER 2 DOSES	AFTER 3 DOSES
Specific fuel consumption, g/hp·h	306	295	294
Power measured on the bench, hp	32.7	41.5	45.5
Hourly fuel consumption, kg/h	10.0	—	13.4

Measurements at one and the same mode, gravimetric method. The power taken from the engine rose by 12.8 hp, hence the higher hourly consumption at a lower specific one.

Conclusion of the Engine Diagnostics Center

The engine arrived at the bench after a mileage of about 100,000 km, with an oil burn of 4 l per 100 l of petrol and compression of 5 kgf/cm² in the weakest cylinder. Introducing XADO technology® into the engine oil and the gearbox oil of the tested powertrain led to the following changes: 1. An increase in compression in all cylinders by 10-20 %; 2. A reduction of CO emissions by 16-17 % and HC by 75-80 %, depending on the engine operating mode; 3. A reduction of specific fuel consumption by 4 %; 4. Restoration of the oil pressure in the engine's oil system to the values specified by the manufacturer. On the whole, we consider that the use of XADO technology®, subject to compliance with the run-in recommendations for the powertrain, unequivocally provides an improvement of the engine's main technical, economic and environmental indicators.

The results refer to a VAZ-21011 petrol engine assembled with a VAZ-2103 gearbox on a load bench; on other equipment and under other modes the figures may differ. RVS is an obsolete XADO designation, the zero-generation compounds; the current product generation is revitalizants. The original report with signatures and seal is published in full and available for download.

Current equivalent

Revitalizant gel for cylinder restorationEngine cylinders, deep wear
Revitalizant gel for gearboxesGearboxes · transmissions · gear drives
Revitalizant gel for petrol enginesPetrol engines

How such units are treated: Cylinder-piston group Gearbox Petrol engine

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