Just wondering how many folks out there run a quality dino for spring/summer/fall and switch to a synthetic in winter.
My method has been to run Pennzoil YB/Formula Shell three seasons and then switch over to an oil such as Amsoil 0w-30 right before the sub-zero winter temps arrive and run it until spring. None of my vehicles have block heaters because of the expense of putting one in three vehicles,so in -20 to -30F it is well worth the expense of switching over the SSO in winter.
Now that the myth of harm coming from switching from syn to dino has been adequately debunked I see no harm in this, only gains.
My method has been to run Pennzoil YB/Formula Shell three seasons and then switch over to an oil such as Amsoil 0w-30 right before the sub-zero winter temps arrive and run it until spring. None of my vehicles have block heaters because of the expense of putting one in three vehicles,so in -20 to -30F it is well worth the expense of switching over the SSO in winter.
Now that the myth of harm coming from switching from syn to dino has been adequately debunked I see no harm in this, only gains.