My runner runs great but it just turned over 100k miles do I need major service? on 2002 Toyota 4Runner

2002 4runner.What is the average cost of this service? What can I expect to be done? Can this major service be put off or will I be sorry I delayed?

2 answers 2 comments
Look through your service and maintenance records.Spark plugs may be due, valve clearances are shim adjusted may be worth while checking the clearances. Every 30k miles I change all the fluids in the car, trans oil, diff oil, brake fluid, anti freeze ect... peace of mind and ensure the Toyota will run 200 or 300k miles. I understand cost is so important these days decide how long you will probably keep your Toyota. We have customers with 300 and 400K on their cars.
Thanks-I love my runner & have taken good care of it. Thanks forn the response
Plugs aand timing belt should be replaced at 90K. Every 120K you should adjust valve clearances. If you haven;t completed thoses services then schedule it.
Thanks for the advice will b in touch :))