Originally Posted by vinuneuro

FJ, drain it into a clean container and throw it in the M3 next time it needs oil; no waste. 15W-50 is a ton more viscous that the factory spec.

Big J: Mobil1 0W-30 is a very thin oil. Towards the very bottom of the 30wt range; go with M1 5W-30. Amsoil Series 2000 0W-30 is a very very good oil. All the Amsoil products (including Air Filters) are outstanding.