which grade oil do i use?

chappers · Post by **chappers** » Mon Jun 08, 2009 4:57 pm

ok..pardon me if this has been dealt with on here a million times already

but at the weekend, im gonna service the little nc30 for the first time. i have some quality fully synthetic oil in my garage that i bought for my last bike. it is graded at 10w50.
the haynes manual says that the bike should use 10w40. what is the difference and can i use the oil in my shed?

Post by **abrmoto** » Mon Jun 08, 2009 5:11 pm

10/40 semi.
dont use fully sythetic or you will knacker your clutch.

Post by **Neosophist** » Mon Jun 08, 2009 9:15 pm

as abr said, fully synth in bikes not designed to it can be bad, in the case of the VFR's a lot of people (myself included) have had muchos clutch troubles with it slipping etc.

you can use 10/50 if you want but i wouldn't use what you have due to it being fully synth.

Post by **Spike16** » Tue Jun 09, 2009 10:48 am

Iv got castrol 10/40w fully synthetic in my bike, and have never had a problem with the clutch sliping

Im gona change the oil again next week ready for racing at the weekend should i go back to 10/40 part? will the bike run better on this?

NC35 · Post by **NC35** » Tue Jun 09, 2009 3:38 pm

Spike16 wrote:Iv got castrol 10/40w fully synthetic in my bike, and have never had a problem with the clutch sliping

Likewise - I use a full-synth 10/40 and haven't had any clutch-slipping problems.

MexicanGringo · Post by **MexicanGringo** » Tue Jun 09, 2009 10:14 pm

Full synthetic should be fine unless its described as a super lubricant/low friction.. Synthetics retain their viscosity ranges for longer than ordinary mineral oils, as the molecule chains break up slower

Post by **Neosophist** » Thu Jun 11, 2009 1:10 am

Spike16 wrote:Iv got castrol 10/40w fully synthetic in my bike, and have never had a problem with the clutch sliping

Im gona change the oil again next week ready for racing at the weekend should i go back to 10/40 part? will the bike run better on this?

Other than psychological (bikes always seem to run better after a service, mind you this is sometimes true when you have dodgey plugs, filters etc)

You probably wont notice any difference.

Cheapest oil (within reason) changed regularly will benefit your wallet and bike though. Usually 10/40 part synth :)

Post by **Lope** » Thu Jun 11, 2009 4:19 am

I run castrol activo not sure exact weight, but no clutch slipping problems either.

Post by **Neosophist** » Thu Jun 11, 2009 10:28 pm

Lope wrote:I run castrol activo not sure exact weight, but no clutch slipping problems either.

Activo is Semi-Synth tho?

Post by **Sligeach** » Fri Jun 12, 2009 12:40 am

Neosophist wrote:[

Cheapest oil (within reason) changed regularly will benefit your wallet and bike though.

Agreed, i use halfords M/C oil 10w40 semi synth, and change it every 2.5-3 thousand miles. at the moment there is a deal on at 5 Lt for 19.98. nice and cheap

which grade oil do i use?

which grade oil do i use?

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