However when they have their products tested they use the maximum dose ratio, of course to show the best results possible. They can then claim the results without explaining that they tested their product using more of the product than they say you need. If a product is suppose to work for you at a given rate then it should be tested as such with rare acceptation. Any quality additive supplier should be delighted to show you the actual test results of their product using the proper methods. If not, beware.
Some products claim to meet the lubricity requirements of rotary fuel injection systems.
Paul Henderson with Stanadyne the head of Technical administration has worked with diesel fuel injection equipment for 20 years. He is also chairman of the ISO working group in charge of diesel fuel lubricity. When asked about claims such as this, he responded that Stanadyne has not even made public their requirements for lubrication. I also talked with Dieter Niemeyer who is the Manager of Application with Bosch and has been in engineering heavy-duty diesel for 33 years. His response was basically the same as Stanadyne with the addition that Bosch does not endorse any product.