Some engines demand that low mile/time OCI with full synthetic to keep the engine clean, extend it out to 5K and you may have a sludge or excess varnish issue.
I don't think your engine meets any of the criteria for one of these engines but there is absolutely nothing wrong with what are doing.
Timing chain wear on those long chains (less) and varnish free hydraulically operated components are just some of the benefits of a shorter a OCI an can save a lot of money in the long run.
3,000 miles and 6 months in synthetic??
Nothing to see here (except wasted oil). Drive on.
I hear ya â€¦..can't help myself
at least I know my engine is clean â€¦..except for the possible sludge
My wife has a 2008 Escape V6 she drives 1 miles to work now, before we moved a year ago she drove 3 miles one way
With the oil cap off the gear chain and two rocker arms that I can see is still shiny new no sludge no varnish
QS 5/20 for every oil change
If you believe you may be prone to sludge , consider to run 1oz. of Seafoam to 1 qrt. of oil in the crank case for between 100 to 300 miles max at the end of an OCI - then drain and refill with new oil and oil filter .