10w-30? - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 6 (permalink) Old 05-07-2010, 09:03 PM Thread Starter
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10w-30?

My local Honda dealer only had 10w-30 GN4 in stock and I'd really like to change the oil. I know the manual shows 10w-30 as acceptable for less than 85 or so degrees, and here in Maine, that is a pretty average summer day, but it can get much hotter occasionally. I just wanted to get some opinions if I should go for this weight or try to find 10w-40 instead?

Just picked up an '04 RC with 1,600 miles - all stock - and I'd like to continue a few changes of dino before switching to full-synthetic.
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post #2 of 6 (permalink) Old 05-07-2010, 09:33 PM
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If possible I'd try for 10W40 if the weather is going to be over 85 deg.
10W30 would probably work ok, but just to err on the safe side.
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post #3 of 6 (permalink) Old 05-08-2010, 08:07 AM Thread Starter
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Yeah, I think I will return the oil I have and order some 10w-40. Thanks!
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post #4 of 6 (permalink) Old 05-12-2010, 10:31 AM
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30 will be fine but if you've already gotten the 40 then thats even better
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post #5 of 6 (permalink) Old 05-12-2010, 11:09 AM
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10w40 oil is OK, motorcycle or car

10w30 is motorcycle oil only as the car oil will have the extra additives the motorcycle oil doesn't
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post #6 of 6 (permalink) Old 05-13-2010, 09:00 PM Thread Starter
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I ended up returning the Honda GN4 10w-30. The dealer told me that Honda has discontinued their 10w-40 in both the GN4 and the HP4 and will only produce 10w-30. Thought that was sorta strange, but in any case, I picked up Suzuki 10w-40 - all the same specs as the Honda GN4. The bike only has 1,600 miles on it, so I wanted to get at least one more, if not two dino oil changes in before switching to full synthetic. Took me a while to figure out the clips on the fairings, though. All set now - next change will be a breeze!
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