Recycled oil

For my vehicles, I use what the maker advises. My '03 Ford F-250 advises a synblend and that's what it gets. The BMW gets a full synthetic. My other stuff gets dino or, if it's used in cold weather, will get whatever is on the shelf.

I tend to change oil and filters in shorter intervals than what's advised since I do my own maintenance and run my rolling stock out to past 200K.