[JoeFromPA]

Some individuals feel that changing the oil too frequently is a bad thing, as it increases the likelihood of something going wrong (oil filter housing coming loose, contamination at top of engine).

The other reason is that oil has the most volatile compounds when new, which breakdown in the first few hundred/thousand miles. After that, it tends to be in quite good shape for a long time in terms of stability.

Neither of those reasons really apply, in my opinion, to oil changes that are at least 1000 miles apart.

On the flip side, there is no reason why high-end oils (such as M1 0w40) should be replaced at 5k miles in the m96 (unless it's been well over a year, or it was 5k of the most brutal miles). The m96 is not that brutal of an engine by any standard, and it has a massive sump size full of high-end oil....

Sump size matters alot in these things.