Pretty simple poll...

have the 5.9L mag..

truck doesnt know what a garage looks like...

sits outside in an alaskan winter 7-8 months of the year...

take in mind im using Mobil 1 on all 4 types ... havent made up my mind knew where to come to get some honest good opinions.. dont let me down boys and girls

 

ANd if it sits outside during the coldest months, I'd even try and find a 0-30 synthetic oil.

 

thanks guys for the votes....

i ended up goin with the mobil1 5-30 synthetic and seems to be runnin great at 65 degrees I will update this post when the weather go below zero


Dano