Myth: I need to flush my engine before switching to Mobil 1.
Reality: No special preparation is necessary when switching from conventional engine oil to Mobil 1.
Myth: Mobil 1 requires a special oil filter.
Reality: While ExxonMobil recommends that you use a high-quality filter, you can use the same type of oil filter that you would normally use with conventional mineral oil.
Myth: Mobil 1 will leak out of the seals of older cars.
Reality: Mobil 1 does not cause leaks. In fact, new Mobil 1 was tested in dozens of industry standard and original equipment manufacturers (OEMs) tests to prove its seal performance. It is fully compatible with the elastomeric materials from which automotive seals and gaskets are made. If an older engine is in good condition and does not have oil leaks, Mobil 1 provides the same advantages as it does when used in a new engine. ExxonMobil recommends taking measures to repair the leaks before using Mobil 1. ExxonMobil also recommends following the automobile manufacturer's manual for the proper oil to use.