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Type M-V or equivalent. (eg. Dexron III) per the Mazda protege5 service manual (section 5 chapter 17 page 18).

Member comment: M-V is a Ford specification for automatic transmission oil, more commonly known as " Mercon V," usually spoken as "Mercon Five." Many multi-purpose automatic transmission oil brands do not meet this standard, especially some of the petroleum base oils. It is important to read the label and look for compliance to this standard. Many of the information labels on multi-purpose transmission oil state that (on a given brand) it is not suitable for use in transmissions requiring Mercon V. Others, such as Mobil1, are formulated to be suitable where Mercon V is required, although it may have been blended and marketed to appeal to a larger installed base of automobile transmissions.

On a Mazda and many other import vehicles, a drain plug is present. This will allow the draining of about one third of the transmission. If the transmission oil is changed regularly, there is no need to remove the oil pan and the oil filter (often a wire mesh screen). It is good practice to replace the aluminum-sealing washer on the drain plug each time.

If the oil is changed regularly, the oil pan, the oil filter, and all the inner parts of the transmission will stay clean, eliminating the need to remove the oil pan. If the oil is seriously aged or heavily soiled, removal of the pan may be sensible.

If possible, change the oil once a year or every 12-15k miles, whichever occurs first. Doing so will extend the service life of the transmission and your chances of a failed or prematurely worn transmission will be dramatically reduced.

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14y ago

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