Mobil 1 Logo with trademark
Mobil 1 RacingTM
Car Care for a Better Ride

My Mobil
Discover the Benefits of Membership
Forgot your username or password?

Newsfeedsfacebook
YouTubeMobil 1 Merchandise
Mobil 1 Rewards
Ask MobilAsk Mobil
Does Motor Oil Turn Acidic with Age?
 
Ask Your Stickiest Question. . . Or ask us something you’ve always wanted to know about using our products. We’ll sort through all the submissions and present the best questions to our automotive experts. We'll share the questions and their answers here.
Question:
Does Motor Oil Turn Acidic with Age?
Does Mobil 1™ become acidic over time? Does normal motor oil become acidic over time?
-- Michael Weekley, Saucier, MS
Answer:
All engine oils become acidic over time by absorbing the natural by-products of the combustion and oxidation processes in your engine.  The key to outstanding engine oils is their ability to neutralize these harmful acids to provide long-term protection to critical engine parts.  Mobil 1 is formulated with selected detergents to maximize the oil’s ability to combat acid buildup and extend the longevity of the oil in your engine.
Ask a QuestionAsk Mobil
Copyright 2005-2014 Exxon Mobil Corporation. All Rights Reserved. ExxonMobil Home | Site Map | Contact Us | Privacy | Legal