Fully synthetic V Semi synthetic oil
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Fully synthetic V Semi synthetic oil
Well it wasn't long before it was raised in another post.
To avoid going over it all again let vote on what we use. I'd be interested inthe results, but then again I've got no mates.
A search of the old site will reveal the pro's and con's
Edit: I use fully synthetic, but only just put it in so buggered if I know if it causes clutch slip.
To avoid going over it all again let vote on what we use. I'd be interested inthe results, but then again I've got no mates.
A search of the old site will reveal the pro's and con's
Edit: I use fully synthetic, but only just put it in so buggered if I know if it causes clutch slip.
I seem to recall Jorge used fully synthetic in the race RSVR without any ill effects.
The plus side is it doesnt degrade and break down over time as readily as mineral based oil, has usually better shear capabilities, amongst other things, meaning it can take abuse better.
Ride it like you stole it, but only on fully synth...
The plus side is it doesnt degrade and break down over time as readily as mineral based oil, has usually better shear capabilities, amongst other things, meaning it can take abuse better.
Ride it like you stole it, but only on fully synth...

Never ride faster than your guardian angel can fly
Oh dear...
My first handfull of posts and i've kicked off 2 polls
All i've got to say is it's only what i've been told when i went to the shop for some oil and i've not used fully synth myself.
And i have not seen any past posts on the subject, only replied to a question someone else asked.
BUT..... Kwackerz.
You say it has better shear capabilities. Well thats why a clutch would slip when it gets between the plates. It doesn't get squeezed out, it sits there and
provides an oil gap between the plates.
(Oh dear what have i started)
Ben
My first handfull of posts and i've kicked off 2 polls
All i've got to say is it's only what i've been told when i went to the shop for some oil and i've not used fully synth myself.
And i have not seen any past posts on the subject, only replied to a question someone else asked.
BUT..... Kwackerz.
You say it has better shear capabilities. Well thats why a clutch would slip when it gets between the plates. It doesn't get squeezed out, it sits there and
provides an oil gap between the plates.
(Oh dear what have i started)
Ben
anti shear capabilities.. errm..
Yeah ive probably got an answer somewhere in my head back from the days when I did my apprenticeship.. (if i'd listened and paid attention i'd probably recall 'important' stuff like this.. sadly I was more interested in the welsh chick i was seeing...)
Yeah ive probably got an answer somewhere in my head back from the days when I did my apprenticeship.. (if i'd listened and paid attention i'd probably recall 'important' stuff like this.. sadly I was more interested in the welsh chick i was seeing...)
Last edited by Kwackerz on Tue Feb 13, 2007 8:27 pm, edited 1 time in total.
Never ride faster than your guardian angel can fly
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I'm back.....
............ and now I'm worried !!
Just checked the container and it's Silkolene Comp 4 fully synthetic 10 - 40.
Not too bothered whether it affects the clutch - if it does I'll change to semi - but is it too thin?
Aprilia recommend 15-50. - synthetic by the way
Silkolene recommend 15-50 - also synthetic (Pro 4)
Presumably I'm fine for now but should change to heavier oil (15-50) for the warmer weather ???
............ and now I'm worried !!
Just checked the container and it's Silkolene Comp 4 fully synthetic 10 - 40.
Not too bothered whether it affects the clutch - if it does I'll change to semi - but is it too thin?
Aprilia recommend 15-50. - synthetic by the way
Silkolene recommend 15-50 - also synthetic (Pro 4)
Presumably I'm fine for now but should change to heavier oil (15-50) for the warmer weather ???
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Had a problem with oil just after getting the Falco.
The dealer where I bought my Falco from put 10-40 in at the first (600) mile service, and before the second (4,500) mile service there was no oil showing in the view tube following a 150 mile trip.
It seems that 10-40 it to thin and just gets used more quickly.
The dealer said this happens with Vee twins.
Found myself a better dealer for the second and following services.
Following letters to Aprilia, it was agreed that this would not invalidate my warranty.
But don't go to that place at Clay Cross.
Adventure before Dementia.
Contraditionthe duke wrote: BUT..... Kwackerz.
You say it has better shear capabilities. Well thats why a clutch would slip when it gets between the plates. It doesn't get squeezed out, it sits there and
provides an oil gap between the plates.
(Oh dear what have i started)
Ben
Oil stays there yes, I does not get squeezed out therefore no other oil gets in. So in theory, if it was assembled with semi or mineral oil it will most likely still be on the plates next time it gets stripped even after many oil changes.
I use fully synthetic by the way.
Q: What about using Synthetic Oils in my clutch?
A: Synthetic oils, by their very nature of better heat resistance and improved lubricating properties, would seem to have an advantage. This is an advantage when it comes to lubricating an engine or transmission, but turns into a disadvantage when used in a clutch. This increase in lubricating properties (they are slippery) can cause an old, worn out clutch to fail. The purpose of the oil in a wet clutch is to cool, not to lubricate. The more 'slippery' an oil is, the more likely a clutch is to slip, resulting in increased heat and creating excessive wear.
While most high performance clutches are designed to work with synthetic oils, it is not recommended that they be used by most clutch manufacturers. Synthetic blends are usually considered acceptable.
From a *coughs* Harley Davidson*coughs* website.
Most 'synthetic oils in circulation are synthetic blends and not fully synthetic, (even when they say 'synthetic' on the tin) so as said in the last line of the quoted answer, are acceptible..
*sits back holding fishing rod*
Never ride faster than your guardian angel can fly