At what mileage was your first oil change on your 18?
#3
Large Member
not an 18, but my first one was done at just over 3000 miles. since then i change it when the olm tells me to, which is usually between 7-8k miles.
#6
Senior Member
500, then every 1000. It's only money and gives me piece of mind.
NOT. I go by the IOLM and did on my last two trucks too. No matter what others say, the engineers that designed the engine and requirements know a lot more than me.
NOT. I go by the IOLM and did on my last two trucks too. No matter what others say, the engineers that designed the engine and requirements know a lot more than me.
#7
Large Member
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#8
Senior Member
https://www.f150forum.com/f38/when-s...mation-372752/
It is, way more. Semi-synthetic (per manual), or synthetic, doesn't matter.
It is, way more. Semi-synthetic (per manual), or synthetic, doesn't matter.
#10
Senior Member
I suspect your IOLM will show at least 35% more life left when you bother to check it.