10W40 Semi Synth.. Ok for RSV??

Bullitt118 · Aug 17, 2013

I use Shell fully synth Oils in my race bikes..
Ok to use 10W40 semi in an RSV?
Thanks in advance..

Sensei · Aug 18, 2013

Use & service my customers bikes with Castrol GPS 10/40 & used Mobil4T-1 15/50 also ... Prefer Castrol as it returned better oil test results .. But oils is all the same when it comes out of the ground it is only when it has being more highly refined that the differences become more noticeable & how much protection it offers when used to it limit

PaulW · Aug 19, 2013

Don't use fully synth in the RSV, you'll promote clutch slip with it. Any reputable 10/40 semi will be fine.

Bullitt118 · Aug 20, 2013

Shell Advance VSX semi it is then thanks:thumbup

RSV 69 · Aug 21, 2013

F*CK ME. Just read this after a oil change 300 miles ago with Fuchs silkolene Comp 4 15W-50. This was what was in it when i bought her. So is this fully synth? If so can I change back to a semi without any harm to the clutch?

Sensei · Aug 21, 2013

There is nothing wrong with full synth !!!! If you have clutch slip's then it is spring pressure or worn plates / friction plates ... Have Drag raced my bike with Mobil4T Racing for years & if there was ever going to be any clutch slip then this would be the way to find it !! Service most of my Customers bike with full Synth never had any clutch issues ..

PaulW · Aug 21, 2013

I'm not talking from personal experience here unlike Sensei, always run semi synth, but there's been plenty of comments in the past affirming my view, just do a Google search.

flatlander · Aug 22, 2013

I believe that the fu;ll and semi thing also depends on years to seme extent but yes I have heard and read firm opinions on the use of fully synth but as I say I am sure that there was an age element to it also

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10W40 Semi Synth.. Ok for RSV??

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