2000 Toyota Camry V6 Automatic, 90000 Miles: Need for Coolant and Drain Fill vs Flush at this point
90K on Camry. Last coolant service was 4,000 miles ago in 2020. Based on time, I figure I should replace the coolant. Last time it seems that it was a flush, not a drain and fill. But I'm basing that on the dealer receipt that says they used part #01161, which the label calls Radiator Flush Kit with a bottle of "Cooling System Fast Flush" and a bottle of "Cooling System Treatment."
Should we do anything at all at this time? I figure yes based on time.
Should we do this same flush with part #01161 or just a drain and fill since it's only been 4,000 miles? I'm wondering if there's anything really to clean up with these products given it's only been 4,000 miles.
Note: going to the dealer because for some reason around here the independent mechanics charge as much or sometimes more than the dealer.
Thanks for your assistance!