Send a sample out to be tested. Every engine is different you may need to change it at 4k miles or 10k miles.

But I do know with the old 617's soot loading becomes a problem past 5k miles.

The first change you also want to cut a little short because a lot of stuff gets cleaned out.

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2006 CL500
1969 280SE
2023 Ram 1500
2026 Genesis GV70
2007 Tiara 3200