??? on engine oil

[kenmac]

I use Amsoil 15w-40 synthetic with (12 TBN) in my tractor. You can get it in 10w -30 With (12 12 TBN) .

 

[RalphVa]

I've a 1983 Benz diesel with 195k miles on it. Until a year ago, I always used Exxon 10w30 Superflo because I worked for Exxon in Lube oil industry and knew what I was buying. Best stuff by our research tests was always Mobil 1. Didn't feel like a traitor after they merged and now have Mobil 1, that 5w40 SUV stuff in it.

I have 5w30 Mobil 1 in my JD. Switched to in at 13 hours.

Ralph

 

[Garrabo]

I use the amsoil 12 TBN as well in my diesels. I use to get the Delvac 15-40 for 5.88 a gallon at wal mart.