[95_GSX]

well this past year i have been running Amsoil 10w40 with their filter they recomend a full oil change once a year or every 25000 miles. with a filter swap at 12500. i run about 6500 miles a year, so i am well under the usefull life of the oil. i have done the research on amsoil synthetics and believe their claims for there product. i also know how well their products perform from using them. i will run amsoil and amsoil only in my car. its all up to you. the only problem with amsoil is you have to become a dealer, a prefered customer, or find some store that sells it. the first and latter will deffinatley make the product more expensive.