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Hi all just wanted to get your take on what oil to use in our bikes.

Now we all know Honda recommend using their brand of oil GN4 10W30 4 Stroke Motorcycle Oil
API Service Classification SG or higher excluding oils marked as "Energy Conserving" or "Resorce Conserving," SAE10W30, JASO T 903 standard MA.

Now the debate begins.....

For use after the initial run in period (1st Service)

MOTUL 4T 5100 10W30 meets all of these requirements (semi-synthetic)
4T 7100 10W30 meets all of these requirements (100% synthetic)

They also make 4T 5100 10W40 (semi-synthetic)
4T 7100 10W40 (100% synthetic)

Note the later (10W40) which I find is easier to get a hold of has a warm grade of 40, which in my belief is better coverage for an Australian climate particularly in Summer where we see 40*c plus temps.

The start point of 10W grade is sweet, no variance here that prevents cold start performance / protection.

My question is would changing from the 10W30 to a 10W40 in anyway VOID WARRANTY ?
As it seems to me the only crime you would be committing is protecting the engine over a wider Temperature base.

Look forward to all you comments / take on this issue :)
 

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Discussion Starter #3
Ozjuice that is what I currently have in my bike, planning on going to the 7100 at the 12000km service
 

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Ozjuice that is what I currently have in my bike, planning on going to the 7100 at the 12000km service
I have used 10w30 synthetic oil for years in all my vehicles, Here in Phoenix our summer temps run 46 to 50 and I have never had a problem . My 500R is new so I cant judge it for sure. Todays oils are formulated to handle hot weather.
 

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manual says ' recommended' for 10-30 oil so it is up to you and what type of climate you are liveing for this and it will not void the warranty.
i personally prefer 10 -40 to use for hot Thai climate, it is better for sure. But 10-30 does not hurt the bike as well.
and unfortunately, Honda Bangkok do not stock 10-40 and they have only 10-30 full synthetic as their oils coming from Japan where the temps are much more lover and winters are cold so it is good for there but not best for Thailand.
 

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With regards to Genie's original question, would a dealer actually have the wherewithall to prove what grade oil has been used? I would have thought it would need specialist analysis.....
 

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The only thing 10-40 might cause would be a slight reduction in fuel economy. It should not hurt, but is not necessary. Modern engines are machined to much tighter specifications than even just a decade ago, and they have cooling systems that are more than adequate to maintain consistent internal operating temperatures even in the hottest weather. Honda has been very much a leader in moving engines to lighter oils.
 

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i think dealer will never care what oil you are using as long as it is for bikes as it does not void the warranty.
 

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With regards to Genie's original question, would a dealer actually have the wherewithall to prove what grade oil has been used? I would have thought it would need specialist analysis.....
No, they wouldn't. And since the first thing they'd usually do is drain the oil, usually into a large used oil tank, they'd have pretty much destroyed the evidence before they even got the engine apart.
 

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about to do our first oil change on the 500r with Shell Rotella 15w40 Shell Rotella® Products - Shell Rotella

A great motorcycle break in oil IMO. This will take the bike up to 1000 miles(Currently at 32miles) After that, ill do one more round of this non synthetic, and at 1500-2k, make the switch to full syn.
 
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Royal purple full syn wet clutch formula. Only the best for my honda.
 

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I will be using REPSOL 10W30 Full Syn. I am at 1300 miles. Just had my 600 mile service done @ 1100 Miles. They didnt use a full syn so I think its a good time to switch.

As for the REPSOL oil, itll cost 18 a quart. GO ahead and call me stupid, but I want the best for my bike!
 

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First change (600) will be whatever the dealer puts in probably the Honda oil. I'll probably take that up to about 2000 miles, which at current use should also be about 6 months.

After that, I got a good deal on a case of Castrol semi-synthetic which should last me a couple of years.
 

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I wanted to stick to using OEM, but I needed one quick. I used a WIX because it was easy to get locally and WIX are some of the best filters made. I'll proably go with OEM next time. I found a list of several more brands that cross to the same filter if anyone wants it.

- OEM... 15410-MFJ-D01
- WIX... 51358
 

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I put in 10W-50 Castrol Power RS Racing 4T Engine Oil (full synthetic) at my break-in service. I've used it in a few other bikes I have, and I swear by it.
 
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