Here's my data point. For the record I'm a bit slower than you (but hopefully still improving) and eight years younger.
In DRF Daniels says most older runners can probably benefit from more threshold training and less interval type stuff than the young guys. I didn't like the sound of this - hey, I want to get the most out of my meager talent even if I'm starting pretty late in the game, not waddle at the back of the pack!
But having tried a few different approaches including a season following Daniels' 10k training pretty faithfully, I've had by far the best success with, well, a lot of threshold stuff. The sort of stuff malmo talks about, or read Hansons' marathon plan and add more mileage and plenty of doubles, or Lydiard's "marathon conditioning" with its "high end aerobic" if that means spending plenty of time at MP and a bit faster.
I've also responded well to speedier stuff with full recoveries, e.g. strides and Daniels' reps. And hills, whether long continuous climbs (sadly, only when out of town) or harder repeats.
OTOH I seem to get disappointing results from VO2max type intervals and also short "hour race pace" tempo runs.
Curious whether other masters runners have found similar - and if in fact there's any kind of consensus on some of this stuff which I just haven't stumbled into yet. And what have you tried, with what results?
Don't recall reading many recommendations for older runners, except I keep encountering the suggestion that old farts should take more days off. That runs counter to my experience at age 39. Better to recover with 8-10 miles in two easy runs.