Since Amsoil is a different animal altogether unlike other synthetic out there, I wonder if I need to flush or do a deep drain before putting it my cars.
I read somewhere that true certain heavy duty synthetic doesn't mix well with other oil. Currently, I am using M1 but like to experience Amsoil in my older car as it sees 30k miles a year. I am thinking about changing oil every 6 month, which is rougly 15k. Fresh filter will be used every 3 months to keep the oil clean.
Thanks
I read somewhere that true certain heavy duty synthetic doesn't mix well with other oil. Currently, I am using M1 but like to experience Amsoil in my older car as it sees 30k miles a year. I am thinking about changing oil every 6 month, which is rougly 15k. Fresh filter will be used every 3 months to keep the oil clean.
Thanks