Concern that Contaminants Linger Longer with Extended Oil Drain Intervals
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:
Concern that Contaminants Linger Longer with Extended Oil Drain Intervals
I realize these oils are durable and do a good job keeping the engine from sludge. But is it a good idea to keep the contaminants floating around for so many miles?
-- Bob Stenerson, Rindge, NH
Answer:
ExxonMobil does extensive field testing in extremely challenging environments. In the course of this testing we do extensive oil analysis and, at intermediate and at the end of the test, a full engine inspection. During the course of the testing, the oil analysis is closely monitored to watch the exact kind of contaminants you are concerned about. In oils like Mobil 1 where the right chemistry using the correct additives balance is used, acids are neutralized, sludge is dispersed, and high temperature deposits are controlled.
