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Deze reply is gepost in de afdeling Main Forum in het onderwerp 'Olie/benzine verhouding 2ru' (ID 69958).
De reply is geschreven door pangolopalanga (UserID 4012) op 18-1-2022 21:16.

En ja...na wat rondsurfen (mixing ratio) blijkt dat je gelijk hebt. Zelfs op wikipedia staat het...20:1 ofwel 50ml 2T-olie per liter benzine.
Maar dat is dan wel voor de crappy olie van toen.
http://forum.fs1eoc....71a29d8cf948a60111a9

20:1 - the standard Fizz original mix on mineral two stroke oil ratio = 50ml of oil per litre of unleaded petrol
with modern advances in two stroke oils and unleaded fuel - I only use this occasionally with mineral premix oil.

25:1 - this is normally a pretty safe premix ratio in a fizzy for all the modern semi or fully synthetic premix two stroke oils = 40ml of oil per litre of unleaded petrol

30:1 - this mix ratio should only really be used if you are using 100% fully synthetic good quality two stroke oil and your confident your set up is spot on and then be careful - I know a few who have seized , knocked out big ends and mains with lack lubrication - I have run this premix on a highly tuned fizz with no issues but I dont run this on a normal every day fizz with a bigbore fitted or standard bore, = 30ml of oil per litre of unleaded petrol

Dus 25:1 is ok voor moderne 2T olie.

Maar de vraag blijft waarom het nodig is...ik denk dat het helpt om de zuigerveren te helpen af te dichten, zware belasting zal wel niet.