If you have Michelin tires 303 is not approved for use on them no matter what 303 says. Michelin has their own concoction (which may be relabeled 303) that they sell. They say it's the only preparation that can be used and they can test for it.
Now, as to whether all that is true ...
Deen wrote: If you have Michelin tires 303 is not approved for use on them no matter what 303 says. Michelin has their own concoction (which may be relabeled 303) that they sell. They say it's the only preparation that can be used and they can test for it.
Now, as to whether all that is true ...