Toyota Camry 2AR in taxi service: compression evened out, fuel consumption dropped

Compression evened out across all cylinders, the piston group resealed, fuel consumption fell. Toyota Camry 2AR, 2.5 l, Taxi Moy Gorod LLC. Russia · 2018.

Taxi Moy Gorod LLC — vehicle owner and customer of the work · treatment performed by AVTO-PRESTIZH LLC · act signed by both parties, with company stamps

Novosibirsk, Russia · act of conclusion dated 20.08.2018

PRODUCTXADO technologyTreatment without disassembly, under regular vehicle operation

TREATED OBJECTToyota Camry engine2AR, petrol, 2.5 l · taxi fleet vehicle

DOCUMENT TYPEAct of conclusion
by the customer and the contractor

Key results

↑27-40%

cylinder compression, 10-11 → 14 kgf/cm²

↓15.2%

fuel consumption, 11.2 → 9.5 l

EQUIPMENT	CONDITION AT START OF WORK	WHAT WAS MEASURED
Toyota Camry, 2012<br/>2AR engine, 2.5 l	Six years of taxi service<br/>compression 10-11 kgf/cm²	Compression in all four cylinders · fuel consumption

Compression across the cylinders of the 2AR engine

CYLINDER	BEFORE TREATMENT, kgf/cm²	AFTER TREATMENT, kgf/cm²	CHANGE
I	10	14	+4 kgf/cm² · +40 %
II	10	14	+4 kgf/cm² · +40 %
III	10	14	+4 kgf/cm² · +40 %
IV	11	14	+3 kgf/cm² · +27.3 %
Spread between cylinders	1 kgf/cm²	0 kgf/cm²	All four cylinders at the same value

Compression does not rise above the nominal value set by the engine manufacturer: bringing all four cylinders to a single value is the maximum achievable.

Fuel consumption

PARAMETER	BEFORE TREATMENT	AFTER TREATMENT	CHANGE
Fuel consumption	11.2 l	9.5 l	−1.7 l · 15.2 %

The drop in consumption follows from the restored sealing of the cylinder-piston group: even compression across all cylinders gives even engine running.

What the act recorded

The treatment was performed without disassembling the engine, on a car that had by then worked six years in taxi service. In the section «Results of treatment» the act states: «Compression evened out across all cylinders» and «Engine throttle response improved». The measurements confirm this: all four cylinders moved from 10-11 to a single value of 14 kgf/cm², fuel consumption 11.2 → 9.5 l. Compression cannot rise above the factory nominal value, so an identical reading in every cylinder is the maximum achievable for a worn engine, and even cylinder operation is exactly what produces the fuel saving. The act recommends: «Introduce into the system scheduled preventive maintenance of machines and mechanisms using XADO technology, ensuring an increase in service life», and XADO technology is recommended for use at Taxi Moy Gorod LLC.

The results apply to a Toyota Camry passenger car with a 2.5 l 2AR petrol engine in taxi operation; on other engines and operating modes the figures may differ. The original act of conclusion dated 20.08.2018, with signatures and stamps, is published in full and available for download.

Current equivalent

Revitalizant gel for petrol enginesPetrol engines
Revitalizant gel for cylinder restorationEngine cylinders, deep wear

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

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