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Automatic Transmission Fluid Change Toyota FJ Cruiser

March 18th, 2015 by Kallie Stewart | Category: Uncategorized

Over the last couple of weeks we have had multiple enquiries about automatic transmission servicing on the Toyota FJ Cruisers and the mileage it should be carried out.


The FJ Cruiser is fitted with an A750F transmission which is also found in the Toyota Land Cruisers. We would recommend this transmission should be serviced every 40,000 km or 24 months under normal driving conditions.  Under more severe driving conditions, such as towing and off road driving, the service interval should be reduced.


Although Toyota may say that this transmission is “sealed for life” and the oil doesn’t require replacing, we certainly recommend the transmission fluid is changed regularly.

Here is an example why:

Below is an image of the transmission fluid which came out of an FJ Cruiser at its first transmission service at 47,000 km. The oil on the right hand side is a sample of the old oil which came out of the transmission; the oil on the left is a new sample of Toyota WS transmission oil (the specified oil for this transmission). As you can see the old fluid is quite dark and discoloured.

Toyota FJ Cruiser Transmission Oil

New vs Old Transmission Oil – FJ Cruiser


Transmission oil deteriorates under heat. The hotter it gets, the less effective it is in providing efficient lubrication and cooling properties through the transmission. By not replacing the transmission fluid regularly, premature damage will be caused to the internal components of the transmission every time they overheat. A simple transmission service every 40,000km will protect your transmission from premature failure and will help you avoid having to pay out expensive repair bills when it fails.

When replacing the transmission fluid on the FJ Cruiser, a full transmission service should be carried out. The pan should be removed and an inspection should be carried out of the transmission pan, fluid and the filter to determine the condition of the transmission. Metal filings in the pan or on the pan magnet are signs of internal wear and may give prior warning to potential problems in the transmission. The external filter should be replaced if it is excessively dirty.

As the FJ Cruisers do not have a dipstick, it is difficult for people to check their transmission oil level and condition at home. If you would like one of our experienced mechanics to check your transmission oil for you, call us and schedule an appointment.

Transmission Oil Cooler


If you are towing with your FJ Cruiser or use it for off road driving, we would highly recommend fitting an external transmission oil cooler. Keeping your transmission cool is the most effective (and easiest) way to dramatically improve the lifespan of your transmission.

When fitting external transmission coolers to the FJ Cruiser, we fit them in seriesExternal Transmission Cooler with your existing heat exchanger. When fitted correctly, the external transmission cooler uses outside air for heat transfer; rather than the already over worked heat exchanger. This provides better and more efficient cooling to your transmission.

Click Here if you would like further information on having an external transmission cooler fitted to your FJ Cruiser or call our friendly staff for a chat!

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