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Are All Synthetic Motor Oil Brands the Same?
I have two questions. I want to change to synthetic oil. Are all major brands of synthetics the same? I can't find the change interval for Mobil 1 synthetic. Thanks.
-- Stanley Martinez, Broomfield, CO
All major synthetic brands are not the same; you can expect formulations to differ from one to another. We would recommend going with the synthetic motor oil that meets the specifications noted in your owner’s manual. There is a high likelihood that Mobil 1 would have an oil for your needs. Mobil 1 will work with the oil change interval that you think best fits your car and driving conditions. Once again, a good start is your owner’s manual especially if your car is under manufacturer’s warranty. Mobil 1 Extended Performance is guaranteed by ExxonMobil for 15,000 miles.