Big deal. You have to change this expensive oil every 4,000 miles/4 months AND at a service center that features Pennzoil to qualify. Plus you have to have less than 48,000 thousand miles and have been manufactured within the last 48 months and only covers 15 parts. So you would spend about $7500 to warranty 15 parts! No thanks. AMSOIL has none of those stipulations.quote:Originally posted by Buster:quote:"We are backing it with a 500,000 mile, 15-year Lubrication Limited Warranty."