There have been times when the technicians at Elite Fleet Automotive have found spark plugs seized in the cylinder heads of some of our Bend area customers' vehicles with as little as 60,000 miles on them. The removal of these seized plugs can result in hours of labor by our technicians at Elite Fleet Automotive. There have been rare occasions when Elite Fleet Automotive has needed to remove cylinder heads just to get the spark plugs removed. Elite Fleet Automotive suggests that in order for our customers in the Bend are to maintain peak performance for their vehicles, that their spark plugs should not be run longer than 30,000 miles. Elite Fleet Automotive suggest that consumers should take those 100,000 mile spark plug marketing claims of manufacturers with a grain of salt.