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HiTEC® 46600 Multifunctional Diesel Performance Additive

DLG-QUALITY SEAL: "Continuous monitoring"

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The quality mark

The DLG QUALITY SEAL for operating equipment and consum­ables encompasses products, which are subjected to extensive testing of their value-determining and advertised characteristics.

The tested criteria and the requirements to be fulfilled are specified by independent commissions and are designed – over and above legal requirements – to prove the product’s fitness for purpose, its advertised characteristics and practical requirements.

Testing contents and requirements are developed further by the responsible specialist departments of the DLG e.V. in line with the applicable legislation, as well as with technical and scientific progress. 

Successful testing is concluded with the assignment of the DLG QUALITY SEAL. The approved products  are then published.

In the course of the development of diesel engines, fuel injection systems have become more and  more complex, the injection pressures higher and the injection nozzle holes in the injectors are smaller,  more precise and more sensitive to dirt and deposits. 

These deposits affect the fuel spray pattern and subsequent combustion becomes less effective.  This reduces engine performance and can also lead to a deterioration in exhaust gas behavior and, in the worst case, to engine damage.

A well-controlled industry ‘Test Fuel’ consistent with fuel used in the industry standard CEC F-098 injector coking test was used to provide an efficient and reproducible method of creating injector deposits. Injector coking deposits in market fuel arise from a range of contaminants and oxidation products that  occur in fuel manufacturing, shipping, and storage. Dissolved zinc from sources such as galvanized fuel tanks or the release of tiny particles from brass connections combined with oxidation products from bio-diesel  can accelerate deposit formation in the nozzle holes in a very short time.

With the HiTEC® 46600 diesel fuel additive deposits on the injector nozzle holes are broken down and new deposits are prevented, reversing the effects on combustion and restoring vehicle performance. Other criteria were not tested.

Assessment in brief

In the series of tests carried out, both the targeted coking of the injectors by the test fuel and the cleaning effect of HiTEC® 46600 diesel fuel additive could be demonstrated. The performance of the machine measured at the beginning of the series of measurements was reached again after cleaning with HiTEC® 46600.

Table 1: Assessment in brief

DLG QUALITY PROFILE Cleaning effect confirmed 
Fuel Efficiencyup to 3.6 % better / 2.1 % ave(PTO testing)
Power Recoveryup to 15.5 % / 12 % ave(PTO testing)
Productivityup to 20.4 %(PowerMix testing)
AdBlue®/ DEF consumptionup to 24.5 % less(Transport testing)
CO2 reduction-2.1 % average(PTO)
 -12.1 % per hectare(Powermix full load cycle)

Manufacturer and applicant

Manufacturer and applicant

Afton Chemical Limited 
London Road, RG12 2UW Bracknell

Telephone +44 1344 356609 


Test performed by

Testing agency
DLG TestService GmbH, Gross-Umstadt location, Germany
The tests are conducted on behalf of DLG e.V.

Head of Department
Stefano Mastrogiovanni

DLG test framework

Tractors, machines & utility vehicles

Test engineer(s)
Hans Joachim Tauber *



DLG TestService GmbH - Groß-Umstadt location • Max-Eyth-Weg 1 64823 Groß-Umstadt Germany • Tel.: +49(0)69 24 788-611 •