CASE SERIES|ROAD TRANSPORT|ENGINES · CYLINDER-PISTON GROUP
TWO TEST REPORTS · JANUARY — APRIL 2013
series of 2 acts
GAZ-52 and D-245 engines: compression increased on both machines without teardown
PRODUCTXADO revitalizantsfull treatment cycle · oil system pre-flushed with XADO "VitaFlush" cleaner
TEST OBJECTSTwo engines of the plant fleetpetrol GAZ-52 on a LAZ 4081 loader · D-245 diesel on a ZIL-5301 truck
DOCUMENT TYPETwo technical reports
signed and stamped by the plant
signed and stamped by the plant
What was repeated on both machines
↑2-13%
compression by cylinder of the petrol GAZ-52, 7.1-9.6 → 8.5-9.8 kgf/cm² (single maximum 32 %)
↑2-6%
compression by cylinder of the D-245 diesel, 20.8-24.8 → 21.5-26.1 kgf/cm²
| MACHINE AND ENGINE | HOURS AT START | TREATMENT CYCLE | WHAT WAS MEASURED |
|---|---|---|---|
| LAZ 4081 loader, inv. No. 54771<br/>GAZ-52 engine, petrol, 6 cylinders | 7381.5 h | 67 h of operation<br/>23.01 — 11.04.2013 | Compression by cylinder, spread between cylinders |
| ZIL-5301 truck, reg. No. AKh 0613 VE<br/>D-245 engine, diesel, 4 cylinders | 59 452 km | 1335 km of mileage<br/>27.01 — 11.04.2013 | Compression by cylinder |
Compression by cylinder — both machines, before treatment and after the full cycle
| MACHINE, ENGINE | CYLINDER | BEFORE, kgf/cm² | AFTER, kgf/cm² | CHANGE, kgf/cm² |
|---|---|---|---|---|
| LAZ 4081 · GAZ-52 | Cylinder 1 | 9.1 | 9.7 | +0.6 |
| LAZ 4081 · GAZ-52 | Cylinder 2 | 7.1 | 9.4 | +2.3 |
| LAZ 4081 · GAZ-52 | Cylinder 3 | 8.2 | 9.3 | +1.1 |
| LAZ 4081 · GAZ-52 | Cylinder 4 | 8.1 | 8.5 | +0.4 |
| LAZ 4081 · GAZ-52 | Cylinder 5 | 8.8 | 8.6 | −0.2 |
| LAZ 4081 · GAZ-52 | Cylinder 6 | 9.6 | 9.8 | +0.2 |
| LAZ 4081 · GAZ-52 | Spread between cylinders | 2.5 | 1.3 | −1.2 |
| ZIL-5301 · D-245 | Cylinder 2 | 24.6 | 26.1 | +1.5 |
| ZIL-5301 · D-245 | Cylinder 3 | 24.8 | 25.4 | +0.6 |
| ZIL-5301 · D-245 | Cylinder 4 | 20.8 | 21.5 | +0.7 |
Measurements taken with MOTOMETER and ZECA 363 compression testers on diagram forms. According to the conclusion of the ZIL-5301 report, compression rose by 0.6 to 2.4 kgf/cm² across the cylinders.
Conclusions of the reports
The commission of the pilot plant of SE UkrNTC "Energostal" recorded a rise in compression on both engines. On the LAZ 4081 loader, compression "evened out and increased across the cylinders": the spread before treatment was 2.5 kgf/cm², after the full cycle — 1.3 kgf/cm², which, according to the report's conclusion, "eliminates crankshaft imbalance, reduces noise and vibration, and increases engine service life by no less than 1.5×". On the ZIL-5301 truck, compression rose by 0.6 to 2.4 kgf/cm²; the smaller gain in two cylinders is attributed by the report to piston ring wear or a defect of the working surface, "which may be eliminated with a longer period of operation". The rise in compression, according to the conclusions of the reports, "indirectly indicates the formation of a XADO metal-ceramic coating on the working surfaces, which contributes to increased engine power, optimisation of the fuel combustion process and ultimately leads to reduced fuel consumption".
The results relate to the GAZ-52 petrol engine and the D-245 diesel under the operating conditions of the pilot plant of SE UkrNTC "Energostal"; on other equipment and in other duty cycles the figures may differ. The originals of both reports, signed and stamped, are published in full and available for download.
Current equivalent
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for diesel enginesDiesel engines
- Revitalizant gel for petrol enginesPetrol engines
How such units are treated: