FIELD CASE STUDY|PASSENGER ROAD TRANSPORT|ENGINE · CYLINDER-PISTON GROUP
ENGINE TREATMENT REPORT — XADO TECHNOLOGY
PAZ 33205 bus: compression rose without engine teardown
PRODUCTXADO revitalizant gel
for enginesOil system flush and decarbonising with Absolut+, then 4 stages in a 1+1+1+2 sequence · XADO Atomic Oil 15W-40 SL/CI-4, 14 l
for enginesOil system flush and decarbonising with Absolut+, then 4 stages in a 1+1+1+2 sequence · XADO Atomic Oil 15W-40 SL/CI-4, 14 l
TREATED UNITPAZ 33205 bus,
reg. no. AA721Petrol engine 5311 · vehicle in regular route service
reg. no. AA721Petrol engine 5311 · vehicle in regular route service
DOCUMENT TYPETreatment report, approved
by the plant chief engineer
by the plant chief engineer
Key result
↑2.4-5.9%
compression by cylinder, 8.5 → 9.0 kgf/cm²; the rest unchanged; gain in 3 of 4 measurements; the rest unchanged
| EQUIPMENT | MILEAGE AT START OF WORK | WHAT WAS MEASURED |
|---|---|---|
| PAZ 33205 bus, reg. no. AA721<br/>engine 5311, petrol | 59,036 km | Compression by cylinder, kgf/cm² |
Compression by cylinder, engine 5311
| CYLINDER | BEFORE TREATMENT | AFTER TREATMENT AND MILEAGE |
|---|---|---|
| Cylinder 6 | 8.5 kgf/cm² | 9.0 kgf/cm² |
| Cylinder 7 | 8.0 kgf/cm² | 8.0 kgf/cm² |
| Cylinder 8 | 8.5 kgf/cm² | 9.0 kgf/cm² |
Measurements were taken before the work began and after the full treatment cycle plus 9,318 km of route mileage (odometer 59,036 → 68,354 km).
What the report showed
“Between 6.03.07 and 4.04.07 the oil system of the engine of PAZ 33205 bus, reg. no. AA721, was treated using XADO technology” — this is how the Lori-Evrotrans report describes the work. The 5311 engine with 59,036 km on the odometer received an oil system flush and four stages of revitalizant gel, with no teardown and without taking the vehicle off its routes. After 9,318 km the cylinder compression rose from 8.5 to 9.0 kgf/cm²: the seal of the cylinder-piston group was restored — the very thing that governs engine power and fuel consumption. The gain runs up against the factory rating: compression cannot climb above it, and coming close to it on a worn engine is the limit of what is achievable. All of this came from an ordinary oil change with the compound added while the vehicle stayed in service.
The results relate to the 5311 petrol engine of a PAZ 33205 bus in urban passenger service; on other equipment and under other conditions the figures may differ. The original report with signatures and stamp is published in full and available for download.
Current equivalent
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for petrol enginesPetrol engines
How such units are treated: