S60r wrote:Just a guess tho
S60r wrote: I also add 2 stroke oil to my tank occasionally to keep it quiet and smooth.
I think we all suffer from cruddy injectors to some extent.
keithcheetham wrote:South African test cell results, in which European spec diesel was also utilised:-
http://www.fuelexpert.co.za/2-stroke-oi ... -study.php
Conclusions
Based on the results of this study, the following conclusions are drawn:
•At a 200:1 volumetric blending ratio, 2-stroke oil has a negligible effect on diesel lubricity.
•All diesel fuel sold in South Africa has to meet the SANS 342:2014 lubricity specification to ensure the proper protection of diesel fuel pumps and injector systems.
•The low sulphur diesel products sold by Sasol contain lubricity improver additives which are far more effective than 2-stroke oil.
•At a 200:1 volumetric blending ratio, 2-stroke oil has a negligible effect on diesel cetane number.
•No measurable effect on all other regulated diesel properties was measured at a 200:1 dose of 2-stroke oil in diesel.
•2-stroke oil can contain around 16ppm zinc, or higher depending on the formulation and batch.
•Trace amounts of zinc in diesel are known to rapidly accelerate injector nozzle deposits.
•Engine test results show that a 200:1 blend of 2-stroke oil in diesel results in a 2% loss of engine power in a 16 hour test due to injector fouling, a risk that would apply to any common rail diesel engine, but could also worsen fouling in older engines.
•Vehicles fitted with a diesel particulate filter (DPF) in the exhaust system could experience reduced DPF life due to the collection of ash and metal based contaminants in the filter over time with the continued use of 2-stroke oil.
The abovementioned results should hopefully clear up many of the public misconceptions around the use of 2-stroke oil in diesel and highlight why both oil companies & engine manufacturers do not recommend the addition of any after-market additives, ie. 2-stroke oil, to the fuel tank. It is also good advice to use fuels from reputable outlets backed up by the technical support of a competent fuel company to enable the best engine performance and durability.
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