What is the recommended differential fluid for the 2006 Highlander?

The recommended differential fluid for a 2006 highlander iS75w-90 gear oil. The recommended change interval is about 100,000 miles, but You can change it early after about 75000 miles to be on the safe side. The differential fluid doesnt get the same treatment as the engine oil, but is equally as important as the engine oil. The metal to metal contact inside the differential wears down the surfaces and creates heat, weakening the gear and leading to failure. To avoid this wear and tear keep an eye on the miles of Your cars differential oil and change it after exhausting its working limit. So to avoid costly repairs and to keep the differential in optimum condition get it changed in good time.