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Engine Oil

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Oil brand wise I always use millers oil grade wise the subject is normally a can of worms tbh lol . If there's anything in the s/h saying what grade it's been running on previously I'd stick with that .

Otherwise Standard bug onwards most use 5w30 and for classics 10 w 40 .

Being forged I'd probably suggest 10 w 40 ,as most forged pistons run looser clearances and the slightly thicker oil will protect the bores /pistons until up to temp and the clearances close up a bit .



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