IE S002TEN TECHNICAL ACTS · MEASUREMENTS 04.09 — 09.11.2001
GAZ-66, ZIL-131, KAvZ, PAZ: compression up, fuel use and emissions down
Compression increased and evened out across cylinders, gasoline consumption dropped, emissions decreased. 10–15 % — compression across cylinders, 3.0–11.0 → 6.0–11.7 kgf/cm²; 6–13 % — petrol consumption, measured on a metered 100 g portion of fuel; 46–67 % — HC content in exhaust gases, 300–2000 → 230–780 ppm (Russia · 2001).
and the customer's summary
What repeated on every vehicle
| VEHICLE | MILEAGE AT START | RUN BETWEEN MEASUREMENTS | WHAT WAS MEASURED |
|---|---|---|---|
| GAZ-66, 55-29 TBSh | 103,156 km | 7,057 km | compression, fuel use, oil pressure |
| GAZ-66, V 483 NO | 11,292 km | 9,296 km | compression, fuel use, oil pressure |
| GAZ-3307, V 014 OV | 23,980 km | 12,911 km | compression, fuel use, oil pressure, CO and HC |
| ZIL-131, 69-19 TBV | 121,566 km | 5,686 km | compression, fuel use, oil pressure, CO and HC |
| ZIL-131, V 951 VKh | 111,010 km | 7,811 km | compression, oil pressure |
| ZIL-131, V 134 SA | 17,166 km | 3,488 km | compression, oil pressure |
| KAvZ-3976, V 599 OV | 52,229 km | 9,571 km | compression, fuel use, oil pressure, CO and HC |
| KAvZ, V 475 VKh | 72,054 km | 14,116 km | compression, fuel use, oil pressure, CO and HC |
| KAvZ-3976, V 185 OV | 37,721 km | 13,697 km | compression, fuel use, oil pressure, CO and HC |
| PAZ-32051, V 648 EM | 29,230 km | 11,398 km | compression, fuel use, oil pressure, CO and HC |
Customer's summary after treating the fleet
| DOCUMENT | WHAT THE CUSTOMER RECORDED |
|---|---|
| Summary of the work | “I consider the use of XADO technology for restoring worn mechanisms in regular service to be expedient at an engine life consumption of 25–75 % and with no oil leaks, including operation in severe climatic conditions” |
| Check disassembly | “During the disassembly of a ZMZ engine after 150,000 km, the piston group and the crankshaft were measured. The dimensions comply with GOST” |
| Observations across the fleet | “Significant improvement in engine operation”, “Increase in oil pressure”, “Reduction in oil consumption”, “Easier engine starting in winter”, “Reduction of CO and HC emissions” |
The summary was signed by S. A. Brusov, head of automotive operations at AUTT-1 of the Almetyevneft division, on 04.09.2001, contract No. 15 of 23.08.2001. This is the customer's assessment, not our measurement.
Compression: ten vehicles, measured before and after treatment
| VEHICLE | BEFORE, kgf/cm² | AFTER, kgf/cm² | GAIN PER THE ACT |
|---|---|---|---|
| GAZ-66, 55-29 TBSh | 7.8–8.5 | 8.6–9.2 | 10.5 % |
| GAZ-66, V 483 NO | 7.0–10.0 | 9.0–11.5 | 14.6 % |
| GAZ-3307, V 014 OV | 9.5–10.1 | 9.5–10.8 | 1.5 % |
| ZIL-131, 69-19 TBV | 6.1–7.8 | 7.0–8.2 | 11.5 % |
| ZIL-131, V 951 VKh | 3.0–8.7 | 6.0–8.8 | 10.7 % |
| ZIL-131, V 134 SA | 4.5–8.0 | 6.0–8.0 | 14.3 % |
| KAvZ-3976, V 599 OV | 8.5–10.0 | 10.0–11.7 | 12.5 % |
| KAvZ, V 475 VKh | 9.0–10.5 | 9.5–11.2 | 9.3 % |
| KAvZ-3976, V 185 OV | 9.0–10.0 | 9.0–10.0 | no change |
| PAZ-32051, V 648 EM | 6.5–11.0 | 10.0–10.8 | 24.2 % |
The percentages come from the “Results” section of each act. Compression rises up to the factory nominal and stops there: the heavier the wear, the larger the gain.
Petrol consumption: check measurement on a metered 100 g portion
| VEHICLE | RUN TIME ON 100 G, BEFORE | AFTER | CONSUMPTION REDUCTION |
|---|---|---|---|
| GAZ-66, 55-29 TBSh | 1 min 35 s | 1 min 41 s | 5.9 % |
| GAZ-66, V 483 NO | 2 min 20 s | 2 min 32 s | 7.9 % |
| GAZ-3307, V 014 OV | 1 min 50 s | 2 min 07 s | 13.4 % |
| ZIL-131, 69-19 TBV | 2 min 05 s | 2 min 17 s | 8.8 % |
| KAvZ-3976, V 599 OV | 1 min 03 s | 1 min 17 s | 18.2 % |
| KAvZ, V 475 VKh | 3 min 35 s | 4 min 00 s | 10.4 % |
| KAvZ-3976, V 185 OV | 1 min 55 s | 1 min 55 s | no change |
| PAZ-32051, V 648 EM | 1 min 50 s | 2 min 00 s | 8.3 % |
Metered portion of 100 g: the longer the engine runs on it, the lower the consumption. A reduction was recorded on seven of the eight vehicles where consumption was measured.
Exhaust gas toxicity
| VEHICLE | CO, % | HC, ppm |
|---|---|---|
| GAZ-3307, V 014 OV | 2.58 → 0.21 | 790 → 430 |
| ZIL-131, 69-19 TBV | 0.23 → 0.10 | 2000 → 780 |
| KAvZ-3976, V 599 OV | 2.3 → 0.18 | 1660 → 630 |
| KAvZ, V 475 VKh | 1.2 → 0.48 | 2000 → 670 |
| KAvZ-3976, V 185 OV | 1.81 → 1.70 | 300 → 230 |
| PAZ-32051, V 648 EM | 0.13 → 0.08 | 1960 → 430 |
Measured with a gas analyser before and after the treatment. A reduction in both CO and HC was recorded on all six vehicles where toxicity was measured.
Oil pressure at an engine temperature of 60 °C
| VEHICLE | IDLE, kgf/cm² | 2000 rpm, kgf/cm² |
|---|---|---|
| GAZ-66, 55-29 TBSh | 3.0 → 4.0 | 4.0 → 5.0 |
| GAZ-66, V 483 NO | 1.5 → 1.7 | 1.8 → 2.0 |
| GAZ-3307, V 014 OV | 1.0 → 1.3 | 2.0 → 2.5 |
| ZIL-131, 69-19 TBV | 0.5 → 0.8 | 2.5 → 2.7 |
| ZIL-131, V 951 VKh | 1.5 → 1.5 | 3.0 → 3.2 |
| ZIL-131, V 134 SA | 1.0 → 2.0 | 2.5 → 4.0 |
| KAvZ-3976, V 599 OV | 1.0 → 1.1 | 3.0 → 3.1 |
| KAvZ, V 475 VKh | 1.0 → 1.2 | 1.5 → 2.5 |
| KAvZ-3976, V 185 OV | 0.7 → 0.7 | 1.0 → 1.2 |
| PAZ-32051, V 648 EM | 1.8 → 2.0 | 3.0 → 3.0 |
A rise in pressure means restored clearances in the friction pairs of the lubrication system: the pump holds pressure again. On ZIL-131, 69-19 TBV, the act also noted that an oil leak stopped.
Conclusions of the acts and of the customer
Current equivalent
- Revitalizant gel for petrol enginesPetrol engines
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
How such units are treated:
About this result:
Limits of this report: The results relate to the petrol eight-cylinder engines of GAZ-66, GAZ-3307 and ZIL-131 trucks and KAvZ-3976, PAZ-32051 buses of Almetyevsk TTD-1, treated without disassembly in regular service; on other engines and duty cycles the figures may differ.