1993 Honda Del Sol's RPMs Drop and Car Lurches as Engine Struggles?

Recently my Del Sol’s RPMs suddenly dropped and the engine was noticeably struggling. After pulling over, the car just stopped and the engine/oil lights came on. I waited and it was fine.

A few days later it did the same thing again, but not as major. It went away while I continued to drive.

Additional information to help:

- Car has 135,000 miles

- I changed the spark plugs myself 2 months ago

- RPM needle started bouncing back and forth 1 month ago, but without any attributable change in noise or feel of the engine

The problem supposedly was oil leaking into the distributor, ruining the ICM and coils. Replacing the distributor unit has seemed to do the trick so far.