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which grade oil do i use?

Posted: Mon Jun 08, 2009 4:57 pm
by chappers
ok..pardon me if this has been dealt with on here a million times already :spank:

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?

Re: which grade oil do i use?

Posted: Mon Jun 08, 2009 5:11 pm
by abrmoto
10/40 semi.
dont use fully sythetic or you will knacker your clutch.

Re: which grade oil do i use?

Posted: Mon Jun 08, 2009 9:15 pm
by Neosophist
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.

Re: which grade oil do i use?

Posted: Tue Jun 09, 2009 10:48 am
by Spike16
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?

Re: which grade oil do i use?

Posted: Tue Jun 09, 2009 3:38 pm
by NC35
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.

Re: which grade oil do i use?

Posted: Tue Jun 09, 2009 10:14 pm
by MexicanGringo
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

Re: which grade oil do i use?

Posted: Thu Jun 11, 2009 1:10 am
by Neosophist
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 :)

Re: which grade oil do i use?

Posted: Thu Jun 11, 2009 4:19 am
by Lope
I run castrol activo not sure exact weight, but no clutch slipping problems either.

Re: which grade oil do i use?

Posted: Thu Jun 11, 2009 10:28 pm
by Neosophist
Lope wrote:I run castrol activo not sure exact weight, but no clutch slipping problems either.
Activo is Semi-Synth tho?

Re: which grade oil do i use?

Posted: Fri Jun 12, 2009 12:40 am
by Sligeach
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