How to Check Your Transmission Fluid

Whether you drive an automatic or a manual: your transmission is essential. Transmission fluid operates at very high temperatures — the right fluid keeps everything running smoothly and extends the life of your gearbox. Check it regularly, even monthly: it only takes a few minutes.

Step-by-step (automatic)

On a manual car the vehicle needs jacking up — leave that to a mechanic. On an automatic:

Park on level, well-ventilated ground and let the engine run for 5–10 minutes to warm up. Keep it running during the check.

Open the bonnet and secure it.

Locate the transmission fluid dipstick (usually lower than the engine oil dipstick — check your manual if unsure).

Pull it out, wipe clean, reinsert and read immediately. The fluid should reach the “full” mark.

Check the fluid is clear and feels smooth. Particles in it, or a burnt smell or look? Have a mechanic inspect it.

Need a top-up? Pour slowly through a funnel, taking care not to overfill.

Replace the dipstick and close the bonnet.

Did you know…?

A transmission fault can look very similar to low transmission fluid. So check your fluid first before fearing the worst. Mobil offers a range of manual and automatic transmission fluids — feel free to ask us for advice. Source: mobil.co.uk