2006 Elantra 164800 mi on the odo
OUT: PYB 5w-30, P1 filter 4100 mi OCI
IN: 2 qt Mobil 1 5w-30 (trying to get rid of old stuff, API SM), 2 qt PYB 5w-30. P1 filter
changed it early. @ around 3000 miles on the oci, thermostat failed closed and engine overheated for a little but. Radiator cracked as well. No lights on the dash appeared. Oil looked fine during drain. I'm not sending it in for uoa