Originally Posted By: Loopie
How about those regular coolants?
I can only tell you about my experience with Prestone All M/M EL. Have used it in an 01 Tacoma V6 and 03 Nissan with no issues to this point, after a total distilled water flush.
IMO, with a reasonable 30K 3yr interval Prestone AM/M is fine. All I can say is, it has worked well for me. It's reasonably priced and easy to find.
Not sure if your 96 recommends distilled water, but it's inexpensive insurance.
Best way to go is with full strength Prestone, with distilled water to 50/50 mix after finding your 4Runners coolant capacity. JMO
J