oil for the winter?

[cchase]

I am changing my oil this week for the anual cold weather tune up, But im wondering what wieght and brand is best for a plow truck in semi harsh winter? and any other cold weather recomendations..

[cchase]

nobody,,, come onnnnnnn my own personal sad BUMP

[DieselViking]

15w40 is good down to 30 degrees for regular duty, and I think down to 10 degrees for towing. Plowing seems similar to towing, so maybe 15w40 is the way to go? If it's colder than 10 degrees where you are and you want something thinner you could always go with the new 5w40 diesel oil that the 6.4 uses. It's compatible with the 6.0's and 7.3's.

[cchase]

it does drop that low, but not that offten.. Is there a negative with running 5w40?

[720Deere]

5W40 is an excellent oil for the cold winter months. It behaves like a 40 weight oil at high temps and pours like a 5 weight oil in low temps. It's not recommended for heavy towing in higher temps, but there is no real downside to using it.

[MidwestOffroad]

I just like to run a good 15w 40 synthetic like AMSOIL or the rottella