I guess when you drain it initially, you can just check what come out then. If there's a bunch of sand, definitely consider a coolant filter. You'll never get it all flushed out no matter what you do, short of taking apart the motor.
If you find little tapioca beads, or any sort of goop that feels like silicone caulking, that's the silicates falling out of the coolant solution. This is not good to let stay in the system, and that's when you should consider a chemical flush. If you don't see any signs of silicates, and it looks like there's been no coolant types mixed, then a drain and fill is probably fine.
Thank you, much appreciated. If this was your rig? Previous owners maintenance, not up to my standards. 55k miles.
Hello, have been searching all afternoon; finding lots of references to "coolant filter," but looking for specifics. Brands, fitment, where to install it, etc. Thanks in advance. Maybe i'm not using Search correctly?
Hello, have been searching all afternoon; finding lots of references to "coolant filter," but looking for specifics. Brands, fitment, where to install it, etc. Thanks in advance. Maybe i'm not using Search correctly?