If there is oil in the radiator top up bottle the most likely cause is that your head gasket has blown and the oil is leaking back into the cooling system. A couple of checks you can do is 1. remove the oil filler cap and look inside the top of the engine and look at the filler cap if there is a grey residue (emulsified oil) then your head gasket has most likely blown also you can remove the radiator filler cap and start the engine, if there are any bubbles coming up in the radiator bottle this is also a pretty sure sign that hte haed gasket has blown. Not a cheap job to repair. Hope this helps. If there is oil in the radiator top up bottle the most likely cause is that your head gasket has blown and the oil is leaking back into the cooling system. A couple of checks you can do is 1. remove the oil filler cap and look inside the top of the engine and look at the filler cap if there is a grey residue (emulsified oil) then your head gasket has most likely blown also you can remove the radiator filler cap and start the engine, if there are any bubbles coming up in the radiator bottle this is also a pretty sure sign that the head gasket has blown. Not a cheap job to repair. Hope this helps.
Lots of oil seals on a 306 need to know which one
use the dipstick
probably 10W40
5w40
10w40 is fine
The gearbox oil fill plug can be located, in your Peugeot 306 2.0, on the top of the gearbox nears the back. The plug can be removed with a three-quarter inch socket
4 quarts
Under the engine, towards the back of the sump.
With a straw LOL, or flush the raditor with fresh water, keep doing it for 15 minutes or so and hopefully should remove most of the oil. Bit of detergent might help to - but remember to ensure that all that is flushed out to.
The oil capacity for a Peugeot 306 1.9D is approximately 4.5 liters when using a standard oil filter. It's important to check the owner's manual for the specific model year to confirm the exact capacity, as it can vary slightly. Always ensure to use the recommended oil type for optimal performance.
with filter 3,7 without filter 3,2
To top up the gearbox oil on a Peugeot 306 petrol, locate the gearbox fill plug, which is typically situated on the side of the gearbox casing. Use a suitable tool, usually a socket or wrench, to remove the plug. Once removed, you can add the oil using a funnel or a squeeze bottle until it reaches the correct level, which should be just below the fill hole. Make sure to replace the plug securely after topping up.