Q: plus the promise of oil, how oil fault lights? A: First, remove the cause of the machinery, electronics, followed by checking the amount of oil filler, oil sensor plug, the machine filter seals and tightening torques, able to do with a computer diagnostic check the fault codes. If you have no problems, oil brand and viscosity of the car before the reference used, re-select promise for other oil viscosity. For example, a section of the old models before been using a particular brand of oil 5W-40 model, with a promise to 0W-40 oil models but there is a problem, it is recommended to replace the promise of 5W-40 engine oil type, because 0W-40 Product temperature start Good Meanwhile, the oil at atmospheric temperature fluidity than 5W-40 good. In general with the gap is too large old car engine, until the engine does not reach optimum operating temperature, low temperature fluidity of the cylinder pressure is maintained but the lack of help. It is often said that the car used to eating whole grains, eat whole grains suited. Wuhan Connaught Trading Company is China National Materials Germany promise for lubricants and Johnson & Johnson architectural glass membrane Hubei only designated agents. China National Materials Company will promise to lubricants to China, get the Mercedes-Benz, Volkswagen, BMW, Porsche factory certification from the German "blood" technology from the track. Contact: Lee