Proving Mobil 1™ lubricant technology in the lab
After simulating driving 120,000 miles with extended oil drain intervals, which translates to about 80 daily stop-start cycles, ExxonMobil engineers determined that Mobil 1 ESP Formula 5W-30 demonstrated excellent performance while providing wear protection under extreme stop-start operations.
Every stop saves: Conserving fuel with stop-start systems
However, it’s challenging to estimate what impact stop-start technology will have on mpg. For drivers with stop-start systems, there will be varying results toward fuel economy. In fact, the Environmental Protection Agency (EPA) fuel economy estimates does not factor stop-start into its mpg ratings. Factors like driving conditions and driving style can have a considerable impact on mpg. Many engineers estimate about 3 to 10 percent, which could add a couple of mpg (e.g., 20 mpg in city driving improves to 22 mpg).
Meeting the demands of stop-start
Also, many different starters and batteries can support stop-start systems, but the internal combustion engine design remains the same, requiring enhanced protection from the extra loads on the crankshaft and rod bearings created by frequent stop-start cycles. Some car makers have even begun applying protective coatings on these bearings to address the potential for increased wear. Mobil 1
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