Semi synthetic or fully synthetic?
Posted: Tue Dec 30, 2014 11:23 am
Hi, I recently moved house and went to my new local bike shop (JT's motorcycles, a large reputable dealers) to buy some oil. I've always put Silkolene comp 4, 10w40 fully synthetic in my bike but when I asked if they had any comp 4 they said they only ever put Silkolene super 4 semi synthetic in all the bikes they work on as apparently fully synthetic causes early clutch slippage.
I never experienced any clutch slippage for the first year and when I did, I put it down to worn clutch plates. I have no idea how old they were as they were the ones in the bike when I bought it. I put in an EBC street race clutch set which replaced the fibre plates, metal plates and springs. I never measured the thickness of the old plates so I don't know how worn they were. 15000 miles on there's still no problem with my new clutch (I'm still using fully synthetic)
I ride mostly on the road but give it a proper thrashing and mainly stay above 10,000 revs. The bike sits midway on the temperature gauge. I change the oil and filter every 2000 miles.
So my questions are
-Am I correct that fully synthetic is better for the engine, especially when being used hard?
-Has anyone had problems with clutch slippage using silkolene comp 4 fully synthetic?
-Is it possible for my clutch to prematurely start slipping after say 15,000 miles instead of after 30,000 miles if I use fully synthetic?
- if that is the case, is it worth using the fully synthetic for the engines sake, and just replace the clutch plates more often?
Thank you
I never experienced any clutch slippage for the first year and when I did, I put it down to worn clutch plates. I have no idea how old they were as they were the ones in the bike when I bought it. I put in an EBC street race clutch set which replaced the fibre plates, metal plates and springs. I never measured the thickness of the old plates so I don't know how worn they were. 15000 miles on there's still no problem with my new clutch (I'm still using fully synthetic)
I ride mostly on the road but give it a proper thrashing and mainly stay above 10,000 revs. The bike sits midway on the temperature gauge. I change the oil and filter every 2000 miles.
So my questions are
-Am I correct that fully synthetic is better for the engine, especially when being used hard?
-Has anyone had problems with clutch slippage using silkolene comp 4 fully synthetic?
-Is it possible for my clutch to prematurely start slipping after say 15,000 miles instead of after 30,000 miles if I use fully synthetic?
- if that is the case, is it worth using the fully synthetic for the engines sake, and just replace the clutch plates more often?
Thank you