small paul Posted May 18, 2017 Share Posted May 18, 2017 Hi guys, when I fuel up my XS 250 will I need to use an additive i.e. lead replacement etc. Link to comment Share on other sites More sharing options...
Moderator Cynic Posted May 18, 2017 Moderator Share Posted May 18, 2017 No. Japan has never had leaded fuel. You should use super or ultimate petrol though. Not for the higher octane although your bike will run better. No because at the moment it is ethanol free. A lot of your seals and the brass in your carbs can be badly damaged by ethanol. As well as running much leaner, not so critical on a 4stroke. Ethanol also holds water. Not good either. Will rot your tank out in no time. 4 Link to comment Share on other sites More sharing options...
small paul Posted May 19, 2017 Author Share Posted May 19, 2017 Thanks for that Cynic Link to comment Share on other sites More sharing options...
Tommy xs Posted May 20, 2017 Share Posted May 20, 2017 Yep like Cynic said, l was using redex lead replacement for years till I joined YOC Only to find I didn't need it, been running fine without now for about 5 years. Link to comment Share on other sites More sharing options...
Moderator drewpy Posted May 20, 2017 Moderator Share Posted May 20, 2017 i do use the super unleaded in the vain hope it doesn't have ethanol in it Link to comment Share on other sites More sharing options...
UK_DT Posted May 22, 2017 Share Posted May 22, 2017 Will the ethanol also impact on two-strokes? Should super unleaded be used instead of regular on two-strokes? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted May 22, 2017 Moderator Share Posted May 22, 2017 42 minutes ago, UK_DT said: Will the ethanol also impact on two-strokes? Should super unleaded be used instead of regular on two-strokes? yes, as they still use carbs. it attacks brass and rubber Link to comment Share on other sites More sharing options...
UK_DT Posted June 5, 2017 Share Posted June 5, 2017 On 2017-5-22 at 2:10 PM, drewpy said: yes, as they still use carbs. it attacks brass and rubber Thanks, that's useful to know. Link to comment Share on other sites More sharing options...
gd427man Posted June 28, 2017 Share Posted June 28, 2017 Does super unleaded prevent the fuel from turning to Gel when left for a long period? I hear this can be a problem for bikes with carbs stood say over the winter, caused by unleaded petrol. Cheers Link to comment Share on other sites More sharing options...
Simon46 Posted June 28, 2017 Share Posted June 28, 2017 Its not as bad. My carb varnished up in 2 mths with unleaded. Not had a problem since with super Link to comment Share on other sites More sharing options...
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