What if someone bought a brand new 03 Cobra back in 2003 with 4 miles on the odometer, babied it for 250-500 miles, changed directly to synthetic oil at 250-500 miles and added Syncron (synthetic slick 50) at 2,000 and 3,000 miles. Would this/could this cause a major decrease in compression from lack of break-in ???????? Hypothetically speaking............