Where They're Located

Gear oil lubricated differentials are found in two-wheel drive and four-wheel drive pickup trucks and SUVs, as well as rear-wheel-drive passenger cars and vans. Periodic replacement of the gear oil is specified by vehicle manufacturers to maintain the performance and longevity of the differential.

The Problem

Over-extended gear oil service can:

  • Lead to gear oil breakdown.
  • Cause poor differential performance and operational noise.
  • Allow excessive wear and corrosion of gears, especially under severe service driving conditions such as heavy loads, high temperatures and stop-and-go driving.
  • Contribute to premature differential failure and replacement (a differential assembly can cost more than $2,000 USD to replace!)

The Solution

Complete replacement of the old differential fluid, in accordance with manufacturer recommended intervals.

Using Wynn’s high-performance synthetic gear oil and state of the art Wynn’s DiffServ™ Differential Fluid Service Machine, the advantages include:

  • Helping extend differential component life.
  • Superior protection of differential, especially under extreme conditions, including protection against friction, wear and corrosion.
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