bpounds wrote:
The dealer is using what Ford specs for normal service. If you don't use the truck in normal service, it is up to you to tell the dealer that you need severe or extreme service oil. How is the dealer supposed to know unless you tell them. And of course, expect to pay extra for the upgraded oil.
My opinion, it doesn’t get any better than Mobil Delvac 1. It is specifically made for extended service, extreme diesel service. But, it’s a “pia” to get.....so I’m using Rotella synthetic for diesel applications.....very easy to get, doesn’t break the bank. memtb
