i drive a 96 buick regal. it has nearly 200,00 miles on it now. when i bought it, when it had 60,000, i was looking for something to help the life of the engine. in the past i had tried all the major products but wasn't very satisfied with any of them. so i thought i'd try your prouct, lucas oil stabilizer. since owning the car, i have replaced the intake gasket twice, once at about 90,000 & about a month ago. both times i had taken the heads off to have them worked, but this last time i was cleaning some surface rust in the cylinders before i put the heads back on. after wiping the cylinders out i noticed something very strange in every cylinder. even tho i had almost 200,000 miles on the engine, there was absolutley no evidence of any wear in the cylinders. None! they looked like it had just rolled out of the factory. i've worked on cars & trucks for 30 yrs, & i have never seen an engine with those miles on it with no cylinder wear. i have to believe that that engine doesn't have any wear because of your product. i change my oil about every 5 or 6 k miles. but i always use abottle of your oil stabilizer with every oil change. my hat goes off to your product. if i could tell the world how great your stabilizer is, i most certainly would.