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Old 04-23-2013, 06:26 AM   #100
craydds OP
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Joined: Aug 2010
Location: Las Cruces, NM
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Originally Posted by Twin-shocker View Post
Why use a castor based oil in a low heat engine? In terms of oil technology the castor/synthetic oils are about 5 years out of date, and a full synthetic pre-mix only oil, will do a better job in any application other than alcohol fuel burning bikes, which require a castor based oil. If you have a play bike, try using full synthetic pre-mix only oil at 60-80:1 mix (depending on application), and I think you will be very surprised at how much better it runs.
I think I was influenced by the favorable reports on the castor oils, but as you state, those reports are old. The synth/castor blend (around 80/20 ??) sounded like a good compromise, but as you state, this may be outdated. I will definitely run a full synth next go-around (will use up my synth/castor, won't toss it). This is experimentation and re-learning about 2-strokes, I've ridden 4-strokes only for the last 10 years, forgotten everything I knew about 2-strokes which was very little.
ABC #12947
'75 R90S
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