Parts for your 1998 Daihatsu Gran move-Transmission filter

1998 Daihatsu Gran Move transmission-filter

On a 1998 Daihatsu Gran Move, a transmission filter is relevant only for vehicles fitted with the 4‑speed automatic transmission, the 5‑speed manual version doesn’t use a filter. This is outlined in Daihatsu’s Pyzar/Gran Move G3-series workshop literature, which shows an automatic transmission oil strainer and pan gasket under the sump, and in service data from Autodata for the period noting pan-off service with strainer cleaning/replacement. Daihatsu parts catalogues for the G3 series also list an “oil strainer (A/T)” for the automatic, while manuals show no filter assembly.

For the auto Gran Move, the transmission filter (technically an oil strainer) sits inside the transmission sump and screens out clutch material and fine debris so the hydraulic circuits and solenoids stay happy. When the filter and fluid are in good nick, shifts are cleaner, engagement is quicker, and the gearbox lasts longer. It’s a simple bit of kit that does a big job, working with the magnets in the pan to keep contaminants out of circulation.

As part of regular servicing in Aussie and Kiwi conditions, it’s smart to refresh the ATF at sensible intervals and plan a pan-off service periodically. A routine drain-and-fill replaces only part of the fluid, dropping the pan lets a technician clean the magnets, inspect for wear, and replace the strainer and gasket. Many tech sources and rebuilders treat the strainer as a service item when the pan is off, or whenever there are shift issues, burnt fluid, or contamination after a failure. If the car’s history is unknown or the shifts feel lazy, a pan service with a new strainer is a great shout.

Recommended practice:

• Use the ATF grade specified by Daihatsu for this transmission (commonly Dexron III–type). Stick with reputable fluid to avoid shudder or flare.
• Schedule periodic ATF changes, and every few services consider a pan drop to replace the strainer and gasket, clean magnets, and check for debris.
• When the pan is off, use new gasket/sealant as specified, keep everything surgically clean, and torque the pan bolts evenly to spec to avoid leaks.
• Watch for signs like delayed engagement, harsh or flaring shifts, or dark, burnt‑smelling fluid—these are cues the filter service is due.

Manual Gran Move owners can relax on this front: the 5‑speed manual uses no filter—just the correct grade of gear oil at the recommended change intervals.

Popular questions

Does my 1998 Daihatsu Gran Move actually have a transmission filter?
If it’s the 4‑speed automatic, yes—there’s an internal oil strainer under the transmission pan. If it’s the 5‑speed manual, there’s no filter at all. The auto’s strainer is typically serviced when the pan is removed during a fluid service or inspection.

How often should the transmission filter be replaced on the auto Gran Move?
There’s no strict kilometre rule from Daihatsu for the strainer, but many workshops in Australia and New Zealand replace it whenever the pan is off—often every few fluid services or if there are shift concerns, dirty fluid, or pan debris. If the service history’s sketchy, a pan-off service with a new strainer is a sensible preventative step.

What ATF should I use, and how much will I need?
Use the ATF specification called for in the Daihatsu workshop data for the Gran Move automatic (commonly a Dexron III–type fluid). A drain-and-fill only replaces a portion of the total capacity, so the amount varies, check the dipstick level procedure and top up carefully. If doing a pan-off service, have extra fluid on hand to account for the additional volume lost.