Originally Posted by bigdrams
On that amsoil website it said that the oil change it is every 25000 miles or every ones a yr. Is that right?
Yes certain Amsoil products have an extended drain interval of up to 25,000kms. Those products are clearly labeled as such. Personally I would never let it go that long however perhaps I will try for 10,000kms as long as it looks nice an clean on the dipstick.