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[extract] For those who drive, they are aware of a car's blind spots, and if you ride a motorcycle, you would know that being or passing through that blind spot could be scary at times. A motorcyclist would not know if the other motorist is aware of his or her presence. The side mirrors on our car, including the rear view mirror, does not offer much view in terms of blind spot areas and we often have to check for any passing motorists before we make a turn or switch to another lane. A university professor in the United States has found a solution to this problem with an invention of a mirror that literally eliminates the blind spot in a driver

Like the TV series Numbers, everything can be mathematically determined. OK visit this page here: http://neptune.spacebears.com/cars/stories/interval.html Yes they are the same guys that are doing the Amsoil vs M1 ongoing study on the longevity of synthetic oil. Firstly, you need these online calulators. Fuel economy conversion calculators: http://www.projects.ex.ac.uk/trol/scol/ccfuel.htm OR http://www.sciencemadesimple.net/fuel_economy.php Engine displacement conversion calculator: http://www.4lo.com/calc/literstocid.htm Finally, miles to km calculator: http://convert.french-property.co.uk/ So assuming I am using RP. RP has a TBN of 8.0 (actually most good PCMOs have a TBN of 8.0 and most HDEOs have 12.0) My engine is a 1.4L so that translates to an 85cid engine. The fuel economy I'm getting is 13.5 consistently. The engine churns out 94HP. My sump capacity is 3.8qts. (I throw in 4qts actually) Using the Kublin method, I get an oil change interval of: 8742miles That is equivalent to: 14068km Wow! My oil can go so far! By using an oil with a TBN of 12.0 like Amsoil or Schaeffer's Supreme 9000 5W40, this bumps the OCI to 21101km! I wouldn't dare attempt the Heidelbrecht method. Very complicated and you have to measure the make up oil you put it. I may kiam but won't kiam until this extreme!