12-08-13, 07:13 PM
my manual gives a range of viscosities and states oil must be API grade SE SF SG or higher. My last oil change was a Castrol mineral oil to API SG. So whilst I'm not saying semi synth isn't better, but aren't we getting OTT when Mr Yamaha's recommendations are within the grades available from mineral?
Discuss.....
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Discuss.....
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