hi. i got a 5litre bottle of millers sport 4 for my car for bout 60quid. i also have an old 500ml bottle. will i be able to transfer it or will there be a prob. thanks.

Use a straw.

Drill/poke a small hole into the top of the small bottle.Decant the fluid from the can into the bottle via the dispenser on top of the bottle.when the fluid is about 10mm below the top,stop & seal the small hole with a bit of insulating tape.You can then measure the dosage the same as before.That's how I've done it for 10 odd years.