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
Impact of Phosphorous Levels in Mobil 1 Motorcycle Oil on Catalytic Converters
 
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:
Impact of Phosphorous Levels in Mobil 1 Motorcycle Oil on Catalytic Converters
Although I've known for some time now that phosphorus was damaging to emissions equipment, specifically the catalytic converter, I just assumed all consumer-level Mobil 1 oils were "safe" until I saw your table showing the high phosphorus levels in Mobil 1 Racing 4T motorcycle oil. What about the catalytic converter in my motorcycle? I've been using 4T for years now and I know BMW and Honda have been using cat's for years (my bike is 8 years old and has one). I have not experienced any problems on my bike, but it is a low-mileage vehicle.
-- Marvin Ng, Manchester, NH
Answer:
We have no information that the level of phosphorus in Mobil 1 Racing 4T is going to significantly shorten the life of your catalytic converter. Catalyst poisoning from Phosphorus is a well known issue; however, premature poisoning of a motorcycle converter is somewhat rare. In motorcycle applications the higher level of phosphorus to protect against excessive wear in the engine and transmission outweighs the concern for poisoning.
Ask a QuestionAsk Mobil
Copyright 2005-2014 Exxon Mobil Corporation. All Rights Reserved. ExxonMobil Home | Site Map | Contact Us | Privacy | Legal