Mobil 1 0-40w in a 2006 Ford 6.0L????
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Originally Posted By: M. Davis
What about the 5/40's for towing purposes? Anyone have an opinion?
A 5W40 is fine for towing, viscosity at operating temp is same or slightly higher than a 15W40, and the base oil is more heat resistant (Group III or IV) than the Group IIs used in most 15W40s.
Charlie
What about the 5/40's for towing purposes? Anyone have an opinion?
A 5W40 is fine for towing, viscosity at operating temp is same or slightly higher than a 15W40, and the base oil is more heat resistant (Group III or IV) than the Group IIs used in most 15W40s.
Charlie
With the 6.0 a higher cetane diesel fuel will help with keeping the turbo functioning properly.
As far as lube choices my personal experience with 5w-40 were sub-par, it sheared out of grade horribely (low 30wt.) and wear metals were higher that the previously run 15w-40.
I am now and have been a 10w-30 convert for the last 60,000mi. or so. Its roughly half the price of 5w-40 and my UOA's look much better, similar to when I run 15w-40
As far as lube choices my personal experience with 5w-40 were sub-par, it sheared out of grade horribely (low 30wt.) and wear metals were higher that the previously run 15w-40.
I am now and have been a 10w-30 convert for the last 60,000mi. or so. Its roughly half the price of 5w-40 and my UOA's look much better, similar to when I run 15w-40
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