My brother has a truck with a Triton V8 engine. The spark plugs have a similar scheduled maintenance mileage requirement. He researched the subject two months before he planned to actually replace them. I cannot remember the details, but he was able to run either a higher octane fuel or some type of additive through his fuel prior to the replacement that made the spark plugs easier to remove without breaking them. Given the fact that I am only at 1100 miles, I have long time to get prepared to face any challenging maintenance on my car. Chevrolet has had 3 years to build these cars, I hope they have taken the ease of replacement into consideration for the parts that are high mileage replacements.