2009 Yamaha v star 650

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29/07/2021 4:50 pm

Topic starter

Hi Scotty,

I know this is not a car question but mostly a motorcycle question. I recently purchased a 2009 Yamaha v star 650 classic with 8,552 miles on it. Reading the owners manual it’s asking to put 10w-30 engine oil on it but the guy that sold it to me has been using 10w-40 Castrol power 1 4T full Synthetic oil is there no problem using that every oil change? And also for the gear oil he has been using 75w-90 Lucas gear oil and the manual is asking 80w-90, is it fine to use 75w-90 on it?

and one more thing any advice in how to maintain it to last me a long time?

thanks for you help!!

Jessie292

(@jessie292)

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1 Answer

30/07/2021 4:11 am

Any reason why the previous owner used different oil viscosities? I would stick to the manufacturer's recommendation for oil viscosity.

yaser

(@yaser)

Illustrious Member

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What I’m thinking is he put 10w40 instead of 10w30 because i live in Oklahoma and right now it’s like almost 100 degrees during the day and for the gear oil I don’t know why but I just changed the engine oil to 10w30 and the gear oil to 80w90 to keep it how it told me in the manual

Thanks for your help!!

By Jessie292 Topic starter 31/07/2021 10:02 pm