Transmission fluid breaks down under heat and most 'lifetime' fluid isn't. A drain-and-fill every 30,000–60,000 miles with the correct fluid keeps shifts smooth and the valve body clean. We use the manufacturer-specific fluid — Honda DW-1, Toyota WS, Nissan NS-3, Mercon LV, Dexron VI — because the wrong one causes shudder and slipping.
Signs you need transmission fluid service
- Harsh or delayed shifts
- Shudder at light throttle
- Fluid is dark or smells burnt
- Past the service interval or history unknown
- Slipping under load
What we do on site
- Check fluid level, condition, and scan for transmission codes
- Drain the pan (and drop it to replace the filter where serviceable)
- Refill with the exact specified fluid to the correct level at temperature
- Perform a relearn or adaptation reset if required
- Road-test and confirm shift quality
Doing this in a driveway
Drain-and-fills and pan services are mobile. We don't rebuild or replace transmissions.
Parts we use
Manufacturer-specified ATF or CVT fluid, pan gasket, filter where applicable.
Pricing: Moderate; the fluid itself is the main cost on newer transmissions. Every job is quoted in writing before we start, and there's no upsell — how our pricing works.
FAQ
Transmission Fluid Service: common questions
Should I flush or drain-and-fill?
Drain-and-fill. It's gentler on high-mileage units and, done twice, replaces most of the fluid. We don't recommend forced flushes on neglected transmissions.
My transmission is sealed with no dipstick — can you service it?
Yes. Sealed units have a fill plug and require setting the level at a specific temperature with a scan tool, which we do.