What Does Manual Transmission Fluid Do?
Manual transmission fluid is designed to both lubricate and cool the vehicle’s gears and bearings. The majority of older and rear wheel cars use 75W90 (GL5). However, newer models will generally use either automatic transmission fluid or a synthetic motor oil.
Why Flush It?
Flushing your manual transmission fluid is not necessary. Instead you will simply drain it out and then refill will new fluid.
If your manual transmission fluid is leaking then it indicates a problem.
Worst Case Scenario
In the worst case scenario, your brass synchronizers could fail which is indicated by grinding noises and/or the car popping out of gear. Your transmission could potentially overheat and fail which could require either a rebuild or a complete replacement.
How Often Does it Need Checked/Changed?
Your manual transmission fluid needs to be checked at least every 2 years or 30,000 miles – whichever comes first! At Parker Automotive we will actually check it as standard whenever you come in for an oil change. You can expect to pay between $60 and $80 for a drain and refill, although if you need synthetic fluids then it will be more expensive, in the region of $120.