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npfman

Best type of Oil WR426

5 posts in this topic

Hi peeps,

mine needs changing soon and a local bike shop is selling up so all oil is half price!.

Which is best type of oil for a 426, 10w40? fully synthetic?, bike will mainly used for green laning, it has yz decomp cam, ported carb, akrapovic exhaust , and made 49~ bhp at the rear wheel. I have completely forgotten what i put in last time!

They also have fork oil cheap not sure what weight to run either?

Cheers for the replies in advance!

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It also has an STM slipper clutch as the guy who owned it before me only rode it as a racing SM

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As long it is NOT friction modified you can run conventional, semi- or fully synthetic. It boils down to personal choice. I've run conventional, fully synthetic Mobil 1, and now semi-synthetic in my WR 426. If it is a good price, go for it. It is all about changing the oil often, more so than the type.

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+1 well said.

I've run conventional, fully synthetic Mobil 1, and now semi-synthetic in my WR 426. If it is a good price, go for it. It is all about changing the oil often, more so than the type.

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Cheers for that got 9 litres of putoline 10w40 fully synth half price in the end!

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