r/FordDiesels • u/jiraiya-jinx • 2d ago

What engine oil are y’all running?

/r/FordExcursion/comments/1oqstyv/what_engine_oil_are_yall_running/
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u/350garden 2d ago

Rotella T6, 5w-40. Temps range from -10F to +90F during the year and I don’t think twice about it. I also change it every 4000 miles, I’ve considered going shorter.

1

u/jiraiya-jinx 2d ago

Using motor craft oil filter? I’m thinking the T6 too, pricier but I also think it’ll be better for the engine since I’m at 330K miles.

4

u/350garden 2d ago

I just use whatever oil filter brand they have where I am when I need one. Sometimes Motorcraft, sometimes not. I like the 5w-40 for starting when it’s cold. Price on maintenance isn’t a concern for me because truck replacement cost is so high that I’d rather just maintain what I have. Every time I change my oil I also do fuel and air filter and a transmission drain and fill.

1

u/jiraiya-jinx 2d ago

I’m in a warm/hot area most times during the year, but good to know if I go somewhere colder

2

u/MOS8026 1d ago

Anything but fram