I need to change my rear diff fluid here soon and came across Castrol's 75w-90 gear oil. They didn't have it the last time I was in the store so I went with Mobil1. It meets or exceeds the GL-5 spec and is about $4 cheaper than the Mobil1.
Is the Castrol a good fluid or should I stick with M1?
I don't have any Amsoil dealers close to me so it's got to be something I can get in an autoparts store.
Is the Castrol a good fluid or should I stick with M1?
I don't have any Amsoil dealers close to me so it's got to be something I can get in an autoparts store.