How do you check the transmission fluid in a 1.6 306 automatic?

Answer 1

For a quick check, lay next to the front nearside wheel and look towards the front offside wheel. (You won't need to jack the car up). Roughly centred between the two you will see a large nut with a smaller nut attached beneath. This is the gearbox drainplug. Place a bowl under the plug and undo the bottom smaller nut, making sure you don't loosen the larger top nut. (This would drain the entire gearbox). If there is excess fluid, it will drain out until the correct level is reached. Chances are though that you will need to top the fluid up. In which case you will need to undo the filler plug, which, looking under the bonnet, can be located @ 4ins to the left of the battery casing, on top of the engine block. It is a round nut with a square indent and it's unlikely you will have the correct tool to undo it. However, I found that the spindle from a door handle, ideally with a handle still attached, removes it in seconds! Automatic gearbox fluid is easily available from your local Halfords, and comes with a long plastic spout which reaches reasonably well into the top-up hole. (It will still make a mess!) Pour in a bit at a time, and keep checking under the car to see if any fluid is coming out of the (still undone) drainplug. when it does, you will know you have reached the optimum fluid level. Replace and tighten up the two plug nuts and the job is done. A word of warning though; you will have to have the electronic counter in the ECU re-adjusted by someone with the proper Peugeot diagnostics gear, otherwise it is likely to effect the engine gear settings.